Explanation:

The average age of 8 men is increased by 2 years when one of them whose age is 24 years is replaced by a woman. What is the age of the woman ? Correct Answer 40 years মহিলাটির বয়স = 8 × 2 + 24 = 16 + 24 = 40 বছর

Explanation:

Which of the following is an important attribute of RAM memory ? Correct Answer Volatile Hints : RAM is normally associated with volatile types of memory, where stored information is lost if power is removed.

Explanation:

The sum of two numbers is equal to thrice difference. If the smaller of the numbers is 10 find the other number. Correct Answer 20 ধরি, সংখ্যা দুটি x ও y ; যেখানে x>y x + y = 3 ( x - y) x + 10 = 3 ( x - 10) x + 10 = 3x - 30 2x = 40 x = 20

Explanation:

A makes an article for Tk. 120 and sells it to B at a profit of 25% B sells it to C who sells it for Tk. 198 making a profit of 10%. What profit percent did B make ? Correct Answer 20% 25 %লাভে A এর বিক্রয়মূল্য ( 120 + 120 × 25/100) টাকা = 150 টাকা। B এর ক্রয়মূল্য = 150 টাকা। 10% লাভে, C এর বিক্রয়মূল্য 110 টাকা হলে ক্রয়মূল্য 100 টাকা C এর বিক্রয়মূল্য 198 টাকা হলে ক্রয়মূল্য ( 100 × 198 /110) = 180 টাকা। B এর বিক্রয়মূল্য 180 টাকা। B এর লাভের হার = ( 180 - 150 /150 × 100) % = ( 30/150 × 100) % = 20%

Explanation:

Which of following provides reliable communications ? Correct Answer TCP Hints : TCP is one of the main Protocol in TCP/IP network. where as the IP Protocol deals only with packets. TCP enables two hosts to establish a connection and exchange stream of data. TCP guarantees delivery of data also guarantees that packets will be delivered in the same order in which they were sent.

Explanation:

A sum of Tk. 600 amounts to Tk. 720 in 4 years at Simple Interest. What will it amount to if the rate of interest is increased by 2% ? Correct Answer Tk.768 এখানে, I = 720 - 600 = 120 r = 120× 100 / 600 × 4 = 5% 2% বৃদ্ধিতে মুনাফার হার ( 5 + 2) % = 7% I = 600 × 7/100 × 4 = 168 মুনাফা - আসল = 600 + 168 = 768

Explanation:

50% of a% of b is 75% of b% of C. Which of the following is C ? Correct Answer 0.667a 50% of a% of b% = 75% of b% of c 50/100 × a/100 × b = 75/100 × b/100× c 50 a = 75 c c = 50/75 a c = 0.667 a

Explanation:

Which of the following refers to the correctness and completeness of the data in a database ? Correct Answer Data integrity Hints : Data integrity refers to the correctness and completeness of the data in a database.

Explanation:

Which is the following is equal to 3.14 * 10^6 ? Correct Answer 3140000 3.14 × 106 = 3.14 × 102 × 104 = 314 × 10000 = 3140000

Explanation:

Data access time depends on - Correct Answer All of them Hints : Data Access Time is the time taken by a computer, or a data storage device or medium, to respond to a user's request for data. Typical accesa times are: CD - ROM drive - 200 milliseconds hard drive - 15 milliseconds ; Random access memory (RAM) - 70 nanoseconds.

Explanation:

The primary job of the operating system is - Correct Answer Manage Resources Hints : All options are job of operating system but the primary job is to manage resources i.e.acts as an interface between the hardware and the programs requesting I/O.

Explanation:

The sum of first five prime numbers is : Correct Answer 28 প্রথম পাঁচটি মৌলিক সংখ্যার সমষ্টি = 2 + 3 + 5 + 7 + 11 = 28

Explanation:

The Internet is an example of - Correct Answer Packet switched network Hints: First propozed for military uses in the early 1960's and implemented on small networks in 1968. packet switching became one of the fundamental networking technologies behind the imternet and most local area networks.

Explanation:

3 years ago, the average age of a family of 5 members was 17 years. A baby having been born the average age of the family is the same today. The present age of the baby is Correct Answer 2 years ধরি, বাচ্চাটির বর্তমান বয়স x বছর 17 = 5 × ( 17 + 3) + x /6 102 = 100 + x x = 102 - 100 x = 2

Explanation:

Which memory allocation policy allocate the largest hole to the process ? Correct Answer Worst-Fit Hints : Worst fit: The memory manage places a process in the largest block of unallocated memory available. Best fit: The allocator places a process in the smallest block of unallocated memory in which it will fit. First fit: Allocates memory from the first hole it encounters large enough to satisfy the request.

Explanation:

Select from the alternatives, the word that conveys more or less the same meaning as the italicised word in the sentence : He was 'engrossed' in days 's office routine. Correct Answer fully occupied Hints: engrossed - নিবিষ্ট বা ব্যস্ত অপরদিকে, fully occupied - ব্যাস্ত

Explanation:

There are two numbers such that the sum of twice the first and thrice the second is 39. While the sum of thrice first and twice the second is 36. The larger of the two is : Correct Answer 9 ধরি, সংখ্যা দুটি x ও y 2x + 3y = 39....... (1) 3x + 2y = 36........... (2) (1) × 3 - (2) × 2 6x + 9y = 117 6x + 4y = 72 5y = 45 y = 9 x = 39 - 27 /2 = 6 বড় সংখ্যাটি 9

Explanation:

Select from the alternatives, the word that conveys more or less the same meaning as the italicised word in the sentence : No one welcome him to a party for he is so 'garrulous'. Correct Answer talks too much Hints: Garrulous - যে বেশি কথা বলে, বাচাল অপরদিকে, talks too much - যে বেশি কথা বলে

Explanation:

Select from the alternatives, the word that conveys more or less the same meaning as the italicised word in the sentence : The use of bullock carts is a 'superannuated' mode of transportation. Correct Answer obsolete Hints: superannuated - সেকেলে বা পুরাতন এবং, Obsolete মানে ও - পুরাতন

Explanation:

Select from the alternatives, the word that conveys more or less the same meaning as the italicised word in the sentence : Bengalis are 'innate' poets. Correct Answer inborn Hints: innate - সহজাত এবং inborn - সহজাত

Explanation:

A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Tk. 392, what was his profit ? Correct Answer Tk. 72 ধরি, ক্রয়মূল্য x টাকা x + x × 2.25/100 = 392 1.225x = 392 x = 392/1.225 = 392 ×1000 /1225 x = 320 লাভ = 392 - 320 = 72 টাকা

Explanation:

Select from the alternatives, the word that conveys more or less the same meaning as the italicised word in the sentence : If you want real 'solace' go to Cox's Bazar Correct Answer consolation Hints : Solace - সান্ত্বনা এবং Consolation - সান্ত্বনা

Explanation:

The least whole number which when subtracted from both the terms of the ratio 6 : 7 gives a ratio less than 16:21 is : Correct Answer 3 ধরি,ক্ষুদ্রতম সংখ্যা x বাদ দিলে ratio 16 : 21 এর সমান হয়। 6 - x / 7 - x = 16/21 112 - 16x = 126 - 21x 21x - 16x = 126 - 112 x = 14/5 x = 2.8 x এর মান যত বৃদ্ধি পাবে অনুপাত 16/21 এর চেয়ে তত ছোট হবে। ক্ষুদ্রতম পূর্ণ সংখ্যা x = 3

Explanation:

Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If both the taps are open then due to a leakage, it took 30 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank ? Correct Answer 36 hrs A ও B একত্রে tank টি পূর্ন করে = 20×5/20×5 = 100/25 ঘন্টা = 4 ঘন্টা। Leakage সহ A ও B tank টি পূর্ণ করে ( 4 + 1/2) ঘন্টায় = 9/2 ঘন্টায় Leakage 1 ঘন্টায় খালি করে ( 1/4 - 2/9) অংশ = 9 - 8 /36 = 1/36 Leakage দ্বারা tank টি খালি হয়. 36 ঘন্টায়

Explanation:

A person was asked to state his age in years. His reply was, 'Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am' What was the age of the person ? Correct Answer 18 years ধরি, লেকটির বয়স x বছর প্রশ্নমতে লোকটির বয়স = ( x + 3) × 3 - 3 ( x - 3) বছর = 3x + 9 - 3x + 9 = 18 বছর

Explanation:

A train can travel 50% faster than a car. Both start lost about 12.5 minutes while stopping at the stations. The speed of the car is : Correct Answer 120kmph ধরি, গাড়ির গতিবেগ x কিমি / ঘন্টা ট্রেনের গাড়ির ( x + x × 500/100) = 3x/2 ঘন্টা 75x/x - 75/3x/2 = 12.5/60 75/x - 150/3x = 125/600 225 - 150 /3x = 125/600 125 × 3x = 600 × 75 x = 600 × 75 /125 × 3 x = 120

Explanation:

10 man, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days ? Correct Answer 6 M1 × T1 / H1 = M2 × T2 /H2 10 × 18 /6 = 15 × 12 /H2 H2 = 15 × 12 / 10 × 3 H2 = 6

Explanation:

A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is : Correct Answer 28% ধরি, towel এর দৈর্ঘ x এবং towel এর প্রস্থ y Towel এর দৈর্ঘ কমে হয় ( x - 20x/100) = 4x/5 একক Towel এর প্রস্থ কমে হয় ( y - 10y/100) = 9y/10 একক ক্ষেত্রফল = 4x/4 × 9y/10 বর্গ একক = 18xy/25 বর্গ একক ক্ষেত্রফল হ্রাসের হার = ( xy - 18xy/35/ xy × 100) % = 28%

Explanation:

When did Bangladesh first participate in the UN Peace-keeping Mission ? Correct Answer 1988 ১৯৮৮ সালে বাংলাদেশ সর্বপ্রথম অংশগ্রহণ করেছিল জাতিসংঘের শান্তিরক্ষা মিশনে। এ মিশনটি ছিলো জাতিসংঘ ইরান - ইরাক মিলিটারি অবজারভার গ্রুপ বা UNIMOG ( মধ্যপ্রাচ্য) ।

Explanation:

Fill in the gap(s) with appropriate option of word(s) : Mr. Mehedi welcomed the delegates __________ the conference. Correct Answer to Welcome এর পরে to বসে । এখানে মেহেদী প্রতিনিধি দলকে কনফারেন্সে স্বাগত জানাচ্ছে বলে Welcome to হবে । অনুবাদঃ জনাব মেহেদী প্রতিনিধি দলকে সম্মেলনে স্বাগত জানালেন ।