Bangladesh Bank MCQs
Showing 50 questions (Total: 2106)
If the sum of the 3 consecutive integers is 240, then the sum of the two larger integers is :
Correct Answer:
D: 161
Explanation:
If the sum of the 3 consecutive integers is 240, then the sum of the two larger integers is : Correct Answer 161 x + ( x + 1) + ( x + 2) = 240 3x = 237 x = 79 ( x + 1) + ( x + 2) = 2x + 3 = 2 × 79 + 3 = 161
After 3 semesters in college , jim has a 3.0 GPA. What GPA must jim attain in his fourth semesters if he wishes to raise his GPA to a 3.1 ?
Correct Answer:
D: 3.4
Explanation:
After 3 semesters in college , jim has a 3.0 GPA. What GPA must jim attain in his fourth semesters if he wishes to raise his GPA to a 3.1 ? Correct Answer 3.4 In 3 semester total GPA = 3 × 3 = 9 In 4 semester total GPA = 4 × 3.1 = 12.4 In 4th semester GPA required = 12.4 - 9 = 3.4
If b < 2 and 2x - 3b = 0,which of the following must be true ?
Correct Answer:
D: x < 3
Explanation:
If b < 2 and 2x - 3b = 0,which of the following must be true ? Correct Answer x < 3 2x - 3b = 0 x = 3b/2 If, b = 2 x = ( 3 ×2) /2 = 3 but, b<2 x <3
If the length and width of a rectangular garden plot were each increased by 20 percent. What would be the percent increase in the area of the plot ?
Correct Answer:
A: 44%
Explanation:
If the length and width of a rectangular garden plot were each increased by 20 percent. What would be the percent increase in the area of the plot ? Correct Answer 44% Short - cut Formula : A + B + AB/100 20 + 20 ( 20× 20) / 100 = 44
নিচের কোনটি রবীন্দ্রনাথ ঠাকুর রচিত নয় ?
Correct Answer:
ক: মৃত্যু-ক্ষুধা
Explanation:
নিচের কোনটি রবীন্দ্রনাথ ঠাকুর রচিত নয় ? সঠিক উত্তর মৃত্যু-ক্ষুধা রবীন্দ্রনাথ ঠাকুর রচিত নয় মৃত্যু - ক্ষুধা। মৃত্যুক্ষুধা কাজী নজরুল ইসলাম রচিত একটি উপন্যাস। এটি ১৩৩৭ বঙ্গাব্দের বৈশাখ মাসে (১৯৩১ খ্রিষ্টাব্দ) গ্রন্থাকারে প্রকাশিত হয়। উপন্যাসটি সওগাত পত্রিকায় ১৩৩৪ বঙ্গাব্দের অগ্রহায়ণ মাস থেকে ১৩৩৬ বঙ্গাব্দের ফাল্গুন মাস পর্যন্ত ধারাবাহিক ভাবে মুদ্রিত হয়।
Select the correct one to fill in the gap. After it was repaired , it ___ again.
Correct Answer:
D: ran perfectly
Explanation:
Select the correct one to fill in the gap. After it was repaired , it ___ again. Correct Answer ran perfectly Verb এর পরে adverb বসে। এখানে ran verb এর পরে perfectly adverb বসবে। তাই সঠিক বাক্যটি হবে After it was repaired, it ran perfectly again.
The headquarter of WTO is in
Correct Answer:
B: Geneva
Select the correctly spelt word ----
Correct Answer:
A: Superior
Explanation:
Select the correctly spelt word ---- Correct Answer Superior Correct spelling হচ্ছে superior যার অর্থ অধিকতর ভালো; উৎকৃষ্টতর, উচ্চতর।
Select the opposite meaning of the word EXPOSE ---
Correct Answer:
D: Conceal
To every action there is an equal and opposite reaction' this theory has been given by
Correct Answer:
B: Newton
The acronym BARD Stands for
Correct Answer:
C: Bangladesh Academy for Rural Development
Select the opposite meaning of the word INADVERTENT ---
Correct Answer:
D: Intentional
Explanation:
Select the opposite meaning of the word INADVERTENT --- Correct Answer Intentional Select the opposite meaning of the word INADVERTENT - - - Unintentional Unintended Accidental Intentional Inadvertent ( অনিচ্ছাকৃত) opposite meaning is Intentional (ইচ্ছাকৃত)
The acronym BRRI Stands for
Correct Answer:
C: Bangladesh Rice Research Institute
Which of the following countries is not surrounded by land ?
Correct Answer:
C: Iran
Select the appropriate word to fill in the gap. It ___ raining since early morning.
Correct Answer:
D: has been raining
Explanation:
Select the appropriate word to fill in the gap. It ___ raining since early morning. Correct Answer has been raining অতীতে শুরু হয়ে একনও চলছে এমন বোঝাতে সাধারণত present perfect continuous tense ব্যবহৃত হয়। তাই এখানে অপশন 'ঘ' সঠিক উত্তর।
Select the similar meaning of the word GRATIS ___
Correct Answer:
B: Free
Explanation:
Select the similar meaning of the word GRATIS ___ Correct Answer Free gratis - বিনামূল্যে, মাগনা। gratifying - খুশি করা, সন্তুষ্ট করা; free - স্বাধীন, মুক্ত, বিনামূল্যে; gracious - দয়াময়, অনুগ্রহশীল; with chrage - দ্বায়িত্ব অর্পন।
Select the opposite meaning of the word GLORIOUS ___
Correct Answer:
C: Disgraceful
Explanation:
Select the opposite meaning of the word GLORIOUS ___ Correct Answer Disgraceful Glorious - মহিমান্বিত, গৌরবান্বিত Disgraceful - মর্যাদাহানিকর
Submarine cable is the term used in -
Correct Answer:
D: Information Technology
Select the correct one to fill in the gap. After the hurricane , uprooted tree ___ all over the ground.
Correct Answer:
B: were lying
Explanation:
Select the correct one to fill in the gap. After the hurricane , uprooted tree ___ all over the ground. Correct Answer were lying Lie অর্থ পড়ে থাকা, শুয়ে থাকা। Sentenceটির গঠন অনুসারে শূন্যস্থানে past continuous tense হবে। Verbটির past form হলাে laid আর present participle হলাে lying। সুতরাং শূন্যস্থানে were lying বসবে আর বাক্যটির অর্থ হবে। হারিকেনের পর সমূলে উৎপাটিত গাছগুলাে মাটিতে পড়েছিল।
Which is the largest trading block in the World ?
Correct Answer:
C: EU
Explanation:
Which is the largest trading block in the World ? Correct Answer EU A trade bloc is a type of intergovernmental agreement, often part of a regional intergovernmental organization, where barriers to trade (tariffs and others) are reduced or eliminated among the participating states. Trade blocs can be stand - alone agreements between several states (such as the North American Free Trade Agreement) or part of a regional organization (such as the European Union). Depending on the level of economic integration, trade blocs can be classified as preferential trading areas, free - trade areas, customs unions, common markets, or economic and monetary unions.
Which country will host the next year's football world cup ?
Correct Answer:
C: USA
Explanation:
Which country will host the next year's football world cup ? Correct Answer USA The bidding procedure to host the 2018 and 2022 FIFA World Cups began in January 2009, and national associations had until 2 February 2009 to register their interest. Initially, eleven bids were made for the 2018 FIFA World Cup, but Mexico later withdrew from proceedings, and Indonesia's bid was rejected by FIFA in February 2010 after the Indonesian Football Association failed to submit a letter of Indonesian government guarantee to support the bid. Indonesian officials had not ruled out a bid for the 2026 FIFA World Cup, until Qatar took the 2022 cup. During the bidding process, all non - UEFA nations gradually withdrew their 2018 bids, thus guaranteeing that a UEFA nation would host the 2018 cup and thereby making UEFA nations ineligible for the 2022 bid.
Who is the longest serving Finance Minister of Bangladesh ?
Correct Answer:
D: M Saifur Rahman
Explanation:
Who is the longest serving Finance Minister of Bangladesh ? Correct Answer M Saifur Rahman Mohammad Saifur Rahman (October 6, 1932 – September 5, 2009) was a Bangladeshi economist and politician. He was a leader of the Bangladesh Nationalist Party and the longest - serving Finance Minister of Bangladesh.
Who is the first woman to win noble prize in economics ?
Correct Answer:
C: Elinor Ostrom
Explanation:
Who is the first woman to win noble prize in economics ? Correct Answer Elinor Ostrom Elinor Ostrom became the first - ever woman to win the Nobel Memorial Prize in Economic Sciences. On Monday, Esther Duflo joined her as only the second woman to be recognized for her work in the field of economics.
Bangladesh is not a member of which of the following association ?
Correct Answer:
D: OPEC
Explanation:
Bangladesh is not a member of which of the following association ? Correct Answer OPEC The foreign relations share the Bangladeshi government's policies in its external relations with the international community. The country pursues a moderate foreign policy that places heavy reliance on multinational diplomacy, especially at the United Nations and World Trade Organization (WTO). Since independence in 1971, the country has stressed its principle of "Friendship towards all, malice towards none" in dictating its diplomacy. As a member of the Non - Aligned Movement, Bangladesh has tended to not take sides with major powers. Since the end of the Cold War, the country has pursued better relations with regional.
Pound is not a currency of which country ?
Correct Answer:
C: Morocco
Explanation:
Pound is not a currency of which country ? Correct Answer Morocco A pound is any of various units of currency in some nations. The term originated in the Frankish Empire as a result of Charlemagne's currency reform ("pound" from Latin pondus, a unit of weight) and was subsequently taken to Great Britain as the value of a pound (weight) of silver. As of December 2019, this amount of silver was worth approximately £147 sterling.
Who is the first governor of Bangladesh Bank ?
Correct Answer:
A: ANM Hamidullah
Explanation:
Who is the first governor of Bangladesh Bank ? Correct Answer ANM Hamidullah Governor of Bangladesh Bank appointed by the government as the chief executive officer, on behalf of the Board of directors, direct and control the whole affairs of the Bank. The first Governor of Bangladesh Bank was Mr. A.N.M. Hamidullah, holding office from January 18, 1972 to November 18, 1978
Which is not a water locked country ?
Correct Answer:
C: Norway
Explanation:
Which is not a water locked country ? Correct Answer Norway A landlocked country or landlocked state is a sovereign state that does not have territory connected to an ocean or whose coastlines lie on endorheic basins. There are currently 44 landlocked countries and 5 partially recognized landlocked states.Kazakhstan is the world's largest landlocked country.
Which is the deepest lake in the world ?
Correct Answer:
B: Lake Baikal
Explanation:
Which is the deepest lake in the world ? Correct Answer Lake Baikal Lake Baikal (5,315 feet [1,620 meters]) Lake Baikal, in Siberia, holds the distinction of being both the deepest lake in the world and the largest freshwater lake, holding more than 20% of the unfrozen fresh water on the surface of Earth.
'JPG' extension refers usually to what kind of file ?
Correct Answer:
D: Image file
Explanation:
'JPG' extension refers usually to what kind of file ? Correct Answer Image file "JPEG" এর পূর্ণরূপ হলো - Joint Photographic Experts Groupএটি ইমেইজ বা ছবির পরিচিতি প্রকাশ করে।
'MPG' extension refers usually to what kind of file ?
Correct Answer:
C: Animation/movie file
Explanation:
'MPG' extension refers usually to what kind of file ? Correct Answer Animation/movie file MPG (also referred to as MPEG) is the acronym for the Moving Picture Experts Group. Files with the .mpg extension often contain movies that are distributed over the Internet.The videos contained within the .mpg files are compressed video files. These files are compressed to allow users to download the files more quickly without sacrificing much of the picture quality in the video itself
How many bits is a byte ?
Correct Answer:
B: 8
Explanation:
How many bits is a byte ? Correct Answer 8 বাইট হল তথ্য পরিমাপের একটি একক। প্রতিটি বাইনারি অঙ্ককে বিট বলা হয় এবং ৮টি বিটকে এক বাইট বলা হয়। ৮ বিট = ১ বাইট, ১০২৪ বাইট = ১ কিলোবাইট, ১০২৪ কিলোবাইট = ১ মেগাবাইট, ১০২৪ মেগাবাইট = ১ গিগাবাইট, ১০২৪ গিগাবাইট = ১ টেরাবাইট।
RAM stands for ---
Correct Answer:
A: Random Access Memory
Explanation:
RAM stands for --- Correct Answer Random Access Memory RAM এর পূর্ণরূপ হলো (Random Access Memory)। RAM সাধারণত মাদারবোর্ড এর সঙ্গে সংযুক্ত থাকে, এটি সুপার ফাস্ট (super - fast) অস্থায়ী মেমোরি যা কম্পিউটার, মোবাইলে বন্ধ বা switched off করলে তার কাজ শেষ হয়, এবং এর মধ্যে থাকা সব ইনফরমেশন বা তথ্য মুছে যায়।
Another word for the CPU is -
Correct Answer:
C: Microprocessor
Explanation:
Another word for the CPU is - Correct Answer Microprocessor মাইক্রোপ্রসেসর বা “অণুপ্রক্রিয়াজাতকারক” বলতে এক শ্রেণীর অতিক্ষুদ্র ইলেকট্রনীয় যন্ত্র বা যন্ত্রাংশকে বোঝায়, যেটি ডিজিটাল কম্পিউটার তথা ইলেকট্রনীয় গণকযন্ত্রের কেন্দ্রীয় প্রক্রিয়াজাতকরণ অংশের কাজগুলি সম্পাদন করার জন্য প্রয়োজনীয় গাণিতিক, যুক্তিভিত্তিক ও নিয়ন্ত্রণমূলক ইলেকট্রনীয় বর্তনী ধারণ করে রাখে। এটি এক ধরনের সমন্বিত বর্তনী যা উচ্চতর ভাষাতে লিখিত প্রোগ্রাম তথা নির্দেশনাক্রম যান্ত্রিক ভাষায় অনুবাদ করে নিতে পারে, সেই নির্দেশনাগুলি নির্বাহ করতে পারে এবং একই সাথে গাণিতিক বিভিন্ন কর্মকাণ্ডও সম্পাদন করতে পারে। তথ্য - উপাত্ত প্রবিষ্টকারী যন্ত্রাংশের (ইনপুট) মাধ্যমে স্থায়ী বা অস্থায়ী স্মৃতিতে (মেমরি) স্থাপিত বিভিন্ন তথ্য - উপাত্ত ও নির্দেশনাক্রম (প্রোগ্রাম) মাইক্রোপ্রসেসরে প্রবেশ করে, এবং মাইক্রোপ্রসেসরটি তথ্য - উপাত্তগুলিকে প্রদত্ত নির্দেশনাক্রম অনুযায়ী প্রক্রিয়াজাত করে ফলাফলগুলিকে তথ্য - উপাত্ত নির্গতকারী যন্ত্রাংশে (আউটপুট) প্রেরণ করে, যাতে সেগুলিকে মানুষের জন্য বোধগম্য রূপে প্রদর্শন (ডিসপ্লে) করা হয় বা মুদ্রণ (প্রিন্ট) করা হয়।
'INTI' extension refers usually to what kind of file ?
Correct Answer:
B: System file
Explanation:
'INTI' extension refers usually to what kind of file ? Correct Answer System file INTI means Initial File. It is a System file
Which one is a database software ?
Correct Answer:
B: ORACLE
Explanation:
Which one is a database software ? Correct Answer ORACLE ডাটাবেজ সফটওয়্যার সাধারণত বিভিন্ন ডাটা বা উপাত্তের ব্যবস্থাপনা ও প্রক্রিয়াকরণে ব্যবহৃত হয়। এ ধরনের সফটওয়্যারের সাহায্যে অনুক্রমিত তথ্যসমূহ খুব সহজে প্রক্রিয়াকরণ করা যায়। যেমন - ডিবেস, ফক্সপ্রাে, এক্সেস, ওরাকল, ভিজুয়াল বেসিক ইত্যাদি হলাে ডাটাবেজ সফটওয়্যার। এই সফটওয়্যারের সাহায্যে ডাটা বা উপাত্তসমূহের কাজ খুব সহজে ও সূচারুরূপে সম্পাদন করা যায়। ওরাকল একটি ডাটাবেজ সফটওয়্যার
Which one is not a graphic-software ?
Correct Answer:
C: Access
Explanation:
Which one is not a graphic-software ? Correct Answer Access গ্রাফিক্স সফটওয়্যার মধ্যে রয়েছে: ফটোশপ, ইলাস্ট্রেটর, পেইন্ট শপ প্রো, CorelDraw, ম্যাকফিন থেকে অ্যাপল ফটো প্লাগইন, অ্যাডোব লাইটরুম, ডিজিটাল চিত্র স্যুট, Canva, পিকাসা, এবং আরো অনেক.
'CD' computer abbreviation usually means ?
Correct Answer:
B: Compact Disc
Explanation:
'CD' computer abbreviation usually means ? Correct Answer Compact Disc কমপ্যাক্ট ডিস্ক (Compact Disc) তথ্য ধারণের একটি চাকতি বিশেষ, ডিজিটাল তথ্য যেমন - লেখা , ছবি, ভিডিও, গান প্রভৃতি রাখার একটি প্রযুক্তি। গোলাকৃতির ও কয়েক মিলিমিটার পুরু চাঁচ নির্মিত এই ডিস্ক কম্পিউটারের ধারণ ক্ষমতা বৃদ্ধিতে বড় ভূমিকা রাখে। আদর্শ সিডিগুলোর ব্যাস প্রায় ১২০ মি.মি. বা ৪.৭ ইঞ্চি হয়ে থাকে এবং এতে প্রায় ৭০০ মেগাবাইট (৭০০×২^২০ বাইট) তথ্য সংরক্ষণ করা যায়। এটি প্রি - রেকর্ডেড, রেকর্ডেবল, এবং রিরাইটেবল তিন ধরনের হয়ে থাকে। এর থেকে তথ্য উদ্ধারের বা পড়ার জন্য একটি ড্রাইভ বা চলক প্রয়োজন হয়।
In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?
Correct Answer:
A: 1/3
Explanation:
In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ? Correct Answer 1/3 Probability = Favorable outcome/ Total No. of outcome R - 8 , B - 7 , G - 6 Total, = 8 + 7 + 6 = 21 P(B) = 7/21 = 1/3
A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side . What is the area of the garden, in square meters , excluding the walkway ?
Correct Answer:
D: 5376
Explanation:
A garden of 100 meter length and 60 meter width has a walkway of 2 meter width on every side . What is the area of the garden, in square meters , excluding the walkway ? Correct Answer 5376 Area of the garden including walkway = ( 100 * 60 ) = 6, 000 sq.m Area of garden excluding walkway = ( 100 - 4 ) *( 60 - 4 ) = 96 * 56 = 5376
The sum of principal and simple interest of a certain amount of money would be TK. 460 after three years from now and TK. 500 after 5 years from now . What is the related interest rate ?
Correct Answer:
D: 5%
Explanation:
The sum of principal and simple interest of a certain amount of money would be TK. 460 after three years from now and TK. 500 after 5 years from now . What is the related interest rate ? Correct Answer 5% Solution: (5 – 3) yr = 2 yrs interest = (500 – 460) = 40 tk 1 year interest = 40/2 = 20 tk. 3 year interest = (20 × 3) = 60 tk Principal amount= (460 – 60) = 400 tkSo, Interest rate = 60/(400×3) = 0.05 = 5%
Of the 3,600 employees of ABC Ltd, 1/3 are clerical . If clerical staff were to be reduced by 1/3,what percent of the total number of the remaining employees would then be clerical ?
Correct Answer:
D: 25%
Explanation:
Of the 3,600 employees of ABC Ltd, 1/3 are clerical . If clerical staff were to be reduced by 1/3,what percent of the total number of the remaining employees would then be clerical ? Correct Answer 25% Of the 3600 employees of ABC Limited, 1/3 are clerical, so the number of clerical employees is = <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3600</mn><mo>×</mo><mfrac><mn>1</mn><mn>3</mn></mfrac></math> or 1200.Clerical staff were to be reduced by <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><mn>3</mn></mfrac></math>.So the number of clerical staff were to be reduced is = <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1200</mn><mo>×</mo><mfrac><mn>1</mn><mn>3</mn></mfrac></math> or 400.So the remaining total employee of ABC Limited is =(3600 -400)or 3200remaining total clerical stuff is= (1200 - 400) or 800.Of the 3200 employees of ABC Limited, 800 are clericalOf the 1 employee of ABC Limited <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>800</mn><mn>3200</mn></mfrac></math> are clericalof the 100 employees of ABC Limited <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>800</mn><mn>3200</mn></mfrac><mo>×</mo><mn>100</mn></math> or 25 are clericalSo, 25 percent of the total number of the remaining employees would then be clerical.
X is west of Y and Y is North of Z. M is south of X. Which direction is M to Z ?
Correct Answer:
A: West
Explanation:
X is west of Y and Y is North of Z. M is south of X. Which direction is M to Z ? Correct Answer West Solution: Y এর পশ্চিমে X এবং Z এর উত্তরে Y. X এর দক্ষিণে M থেকে Z কোন দিকে ? M is West of Z. তাই উত্তর হবে b) West.
Machine A produces bolts at a uniform rate of 120 every 40 seconds and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously , how many seconds will it take for them to produce a total of 200 bolts.
Correct Answer:
B: 25
Explanation:
Machine A produces bolts at a uniform rate of 120 every 40 seconds and Machine B produces bolts at a uniform rate of 100 every 20 seconds. If the two machines run simultaneously , how many seconds will it take for them to produce a total of 200 bolts. Correct Answer 25 In a second A Produces = 120 /40 = 3 and In 1 second B Produces = 100/20 = 5 In 1 second (A + B) Produces = 3 + 5 = 8 8 is Produced in 1 second 200 is produced in 200/ 8 = 25 second
When heated an iron bar expands 0.2% . If the increased length is 1cm , what is the original length of the bar ?
Correct Answer:
A: 500cm
Explanation:
When heated an iron bar expands 0.2% . If the increased length is 1cm , what is the original length of the bar ? Correct Answer 500cm 0.2% = 1cm 1% = 1/0.2%cm 100% = ( 1 * 100% ) /0.2% cm = 500cm
There are 8 more men than women on board of directors of a company. If there are 20 members on the board, how many are men ?
Correct Answer:
D: 14
Explanation:
There are 8 more men than women on board of directors of a company. If there are 20 members on the board, how many are men ? Correct Answer 14 Let, women = x Men = x + 8 x + x + 8 = 20 2x = 12 x = 6 Women = x = 6 Men = 6 + 8 = 14 , Men = 20 - 6 = 14
If 3/p = 6 and 3/q = 15 then p-q = ?
Correct Answer:
C: 3/10
Explanation:
If 3/p = 6 and 3/q = 15 then p-q = ? Correct Answer 3/10 3/p = 6 p = 3/6 = 1/2 3/q = 15 q = 3/15 = 1/5 p - q = 1/2 - 1/5 = 5 - 2 /10 = 3/10
A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?
Correct Answer:
C: 50
Explanation:
A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ? Correct Answer 50 Let, No of horse = x No of pigeons = 80 - x 4x + 2 ( 80 - x) = 260 2x = 260 - 160 2x = 100 x = 50
The average of 5 quantities is 6 . The average of 3 of them is 8 . What is the average of the remaining two numbers ?
Correct Answer:
C: 3
Explanation:
The average of 5 quantities is 6 . The average of 3 of them is 8 . What is the average of the remaining two numbers ? Correct Answer 3 Total of 5 = 6 × 5 = 30 Total of 3 = 8 × 3 = 24 ( - ) Total of 2 = 6 Avg of = 3
A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by :
Correct Answer:
A: 4
Explanation:
A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by : Correct Answer 4 Area = 14 × 10 = 140 sq.cm New length = ( 14 - x) New width = ( 10 + x) 14 - x = 10 + x 2x = 4 x = 2 New Area = ( 14 - 2) × ( 10 + 2) = 144 change is area = ( 144 - 140) sq.cm = 4 sq.cm
Average cost of 5 apples and 4 mangoes is 36 taka. The Average cost of 7 apples and 8 mangoes is 48 taka. Find the total cost of 24 apples and 24 mangoes.
Correct Answer:
B: 2088
Explanation:
Average cost of 5 apples and 4 mangoes is 36 taka. The Average cost of 7 apples and 8 mangoes is 48 taka. Find the total cost of 24 apples and 24 mangoes. Correct Answer 2088 Total cost of 5 apples & 4 mangoes = 324 tk Total cost of 7 apples & 8 mangoes = 720 tk ( + ) Total cost of 12 apples & 12 mangoes = 1044 tk Total cost of 24 apples & 12 mangoes = 1044 ×2 = 2088 tk