Explanation:

The present ages of A and B are in the ratio 6 : 4. Five years ago their ages were in the ratio 5 : 3. Find their present ages. Correct Answer 30, 20 ( 6x - 5) : ( 4x - 5) = 5 : 3 6x - 5 / 4x - 5 = 5/3 18x - 15 = 20x - 25 2x = 25 - 15 2x = 10 x = 5 Present age = 6 ×5 or 30 & 4 × 5 or 20

Explanation:

When a student weighing 45 dgs left a class , the average weight of the remaining 59 students increased by 200g . What is the average weight of the remaining 59 students ? Correct Answer 57 kgs Let, Average weight of 59 students = x kg Total weight of 59 students = 59x Total weight of 60 students = (59x + 45) Average weight of 60 students = ( 59x + 45)/60 x - ( 59x - 45)/60 = 200/1000 ( 60x - 59x - 45) /60 = 1/5 5x - 225 = 60 x = 285 /5 = 57kgs

Explanation:

A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time . Hence the father's present age is --- Correct Answer 45 Let, Son = x Father = 3x 3x + 15 = 2 ( x + 15) x = 30 - 15 = 15 3x = 45

Explanation:

If n and p are both odd numbers, which of the following must be an even number ? Correct Answer n + p Let, n = 3, p = 5 np + 2 = 17 again, n + p = 8

Explanation:

কোনটি উত্তম পুরুষের উদাহরণ ? সঠিক উত্তর আমি উত্তম পুরুষ : বক্তা নিজের নামের পরিবর্তে যে সর্বনাম ব্যবহার করেন তাকে উত্তম পুরুষ বলে। যেমন: আমি, আমরা, আমাকে, আমাদের ইত্যাদি। তাই সঠিক উত্তর : আমি

Explanation:

কোনটি 'আকাশ' শব্দের সমার্থক শব্দ নয় ? সঠিক উত্তর হিমাংশু আকাশ - অন্তরীক্ষ, অম্বর, গগন, নভঃ, ব্যোম, অভ্র, শূন্য, নীলিমা, অনন্ত ইত্যাদি। হিমাংশু - চাঁদ, চন্দ্র, ইন্দু, বিধু, সুধাংশু, হিমকর, শশধর, শশাঙ্ক ইত্যাদি। তাই উত্তর হবে: হিমাংশু।

Explanation:

'হে বঙ্গ ভান্ডারে তব বিবিধ রতন, তা সবে অবোধ আমি অবহেলা করি পরধব লোভে মত্ত' --- কোন কবির কবিতা থেকে নেয়া হয়েছে ? সঠিক উত্তর মাইকেল মধুসূধন দত্ত "হে বঙ্গ ভান্ডারে তব বিবিধ রতন, তা সবে অবোধ আমি অবহেলা করি, পরধন লোভে মত্ত" - উক্তিটি মাইকেল মধুসূদন দত্তের। পঙ্কতিটি মাইকেল মধুসূদন দত্তের "বঙ্গভাষা" কবিতার। "বঙ্গভাষা " মাইকেল মধুসূদন দত্ত রচিত একটি সনেট। ধারণা করা হয় প্রবাসের ফ্রান্সের ভার্সাই নগরীতে থাকাকালীন তিনি এই সনেট লিখেন।

Explanation:

A predator is chasing its prey. The predator takes 4 leaps for every 6 leaps of the prey and the predator covers as much distance in 2 leaps as 3 leaps of the prey. Will the predator succeed in getting its food ? Correct Answer Yes If predator takes 2 leaps and prey takes 3 leaps to cover the same distance, then multiplying the distance by 2 you get predator 4 leaps and prey 6 leaps. With this ratio, they are covering the same distance with their respective leaps.Therefore, they will always be the same distance away from each other unless either changes its speed. so, ans: can't be determined.

Explanation:

Hasan sold an article for 56 taka which cost him x taka . If he had gained x% on his outlay, what was his cost ? Correct Answer 40 taka 56 - x /x = x% 56 - x / x = x/100 5600 - 100x = x2 x2 + 100x - 5600 = 0 x2 + 140x - 40x - 5600 = 0 ( x - 40) ( x + 140) = 0 x = 40

Explanation:

Quantity A = 4/100 and Quantity B = 0.012/3 Correct Answer Quantity A is greater A = 4/100 = 1/25 = . 04 B = 0.012/3 = 0.004 A > B

Explanation:

A good book is ___ with a hard cover to __ its contents . Correct Answer designed, protect Made (তৈরি), Outshine (উজ্জ্বলতায় কোনো কিছুকে ছাপিয়ে যাওয়া) Written (লিখিত), Hied (দ্রুত গমন) Designed (পরিকল্পিত/নকশাকৃত), Protect (রক্ষা করা) Hidden (গোপন/গুপ্ত), Reveal (প্রকাশ করা)

Explanation:

'Road accidents have increased significantly .' The statement will be strengthened by the following EXCEPT : Correct Answer Only well-trained drivers are allowed to run the cars প্রশ্নে একটি বক্তব্য দেয়া আছে যে, 'সড়ক দুর্ঘটনা উল্লেখযোগ্যভাবে বেড়েছে।' জানতে চাওয়া হয়েছে যে নিচে প্রদত্ত অপশনগুলোর মধ্যে কোনটি বাদে বাকিগুলো বক্তব্যটিকে জোড়ালো করে। সঠিক উত্তর অপশন 2. Only well - trained drivers are allowed to run the cars.(শুধু সুপ্রশিক্ষিত চালকদেরই গাড়ি চালাতে দেয়া হয়।) কারন এটি বক্তব্যটিকে জোড়ালো করেনা, দুর্বল করে। অপশন 2 বাদে বাকি অপশন গুলো হচ্ছে, 1. Drivers are running cars recklessly. (চালকেরা বেপরোয়াভাবে গাড়ি চালাচ্ছে।) 3. Road trafficking is almost absent. (যানবাহন চলাচলে নিয়ন্ত্রণ নেই বললেই চলে।) 4. Street trafficking is not working at night. (যানবাহন চলাচল নিয়ন্ত্রণ ব্যবস্থা রাতের বেলা কাজ করছেনা।) এই অপশনগুলো বক্তব্যটিকে জোড়ালো করে।

Explanation:

The argument in the passage would be most seriously weakened if it were true that Correct Answer Domestic production of illegal drugs increased considerably in 2007 -

Explanation:

Find the synonym of the word 'Postulate' Correct Answer Assume Postulate - মৌলিক নীতি, স্বীকার্য। Assume - ধরে নেওয়া। Supplement - পরিপূরক, সম্পূরক। Dispatch - সরকারি কাগজপত্র চালান করা, ডাক প্রেরণ। Prove - প্রমাণ করা।

Explanation:

ইস্পাতে কার্বণের শতকরা পরিমাণ-- সঠিক উত্তর ০.১৫-১.৫% ইস্পাতে কার্বনের পরিমাণ ০.১৫ - ১.৫। ইস্পাত লোহা ও কার্বনের একটি সংকর ধাতু যাতে মান ভেদে মোট ওজনের ০.১৫ থেকে ১.৫ কার্বন থাকে। ইস্পাত লোহার তুলনায় দৃঢ়তর।

Explanation:

In which year the Value Added Tax system was introduced in Bangladesh ? Correct Answer 1991 The Value Added Tax was introduced in Bangladesh on 1 July 1991. The new law on VAT will come into force with effect from 1 July 2017.

Explanation:

Which is the capital of United Arab Emirates ? Correct Answer Abu Dhabi When Britain finally left the Persian Gulf and when the United Arab Emirates achieved political independence (December 1971), a compromise decision made Abu Dhabi the provisional national capital. It was made the permanent capital of the United Arab Emirates in the early 1990s.

Explanation:

Which is the largest country in the world ? Correct Answer Russia The largest country in the world is Russia with a total area of 17,098,242 Km² (6,601,665 mi²) and a land area of 16,376,870 Km² (6,323,142 mi²), equivalent to 11% of the total world's landmass of 148,940,000 Km² (57,510,000 square miles).

Explanation:

Where is the headquarters Intel located ? Correct Answer Santa Clara, California Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.

Explanation:

Kamal is shorter than Ruhan, but taller than Anika, Dina is shorter than Kamal . Rubayet is shorter than Ruhan but taller than Kamal . Who is tallest in terms of height ? Correct Answer Ruhan Kamal < Ruhan Kamal > Anika Kamal > Dina Rubayet < Ruhan Rubayet > Kamal or, Kamal < Rubayet Thus, Ruhan is the tallest.

Explanation:

This year's Noble Laureate in Literature was born in ? Correct Answer Romania The Nobel Prize in Literature (Swedish: Nobelpriset i litteratur) is awarded annually by the Swedish Academy to authors for outstanding contributions in the field of literature. It is one of the five Nobel Prizes established by the 1895 will of Alfred Nobel, which are awarded for outstanding contributions in chemistry, physics, literature, peace, and physiology or medicine. As dictated by Nobel's will, the award is administered by the Nobel Foundation and awarded by a committee that consists of five members elected by the Swedish Academy.

Explanation:

75% of 0.08 = ? Correct Answer 0.060 0.08% × 75% = 0.08 × 75/100 = 0.06

Explanation:

Find the missing letter marked (?) in the series C, H, M, ?, W, B. Correct Answer R চার অক্ষর পরপর = M = N, O, P, Q, R Ans : R

Explanation:

The headquarter of Islamic Development Bank is in - Correct Answer Jeddah The Islamic Development Bank is a multilateral development finance institution that is focused on Islamic finance located in Jeddah, Saudi Arabia. There are 57 shareholding member states with the largest single shareholder being Saudi Arabia.

Explanation:

Which Government agency is responsible for collecting taxes in Bangladesh ? Correct Answer Ministry of Finance The Government agencies in Bangladesh are state controlled organizations that act independently to carry out the policies of the Government of Bangladesh. The Government Ministries are relatively small and merely policy - making organizations, allowed to control agencies by policy decisions. Some of the work of the government is carried out through state enterprises or limited companies.

Explanation:

ESCAP means -- Correct Answer Economic and Social Commission for Asia and the Pacific The Economic and Social Commission for Asia and the Pacific (ESCAP) serves as the United Nations' regional hub promoting cooperation among countries to achieve inclusive and sustainable development.

Explanation:

Which of the following is not a central bank ? Correct Answer State Bank of India State bank of India নামে কোন কেন্দ্রীয় ব্যাংক নেই। ভারতের কেন্দ্রীয় ব্যাংকের নাম হচ্ছে Reserve Bank of India.

Explanation:

A person who studies the atmosphere , weather and weather forecasting is known as - Correct Answer meteorologist meteorologist - A person who studies the atmosphere , weather and weather forecasting sonologist - A person who studies the properties or perception of sound. in Medicine, an expert or specialist in the performance and interpretation of medical examinations by ultrasonography. radiologist - Radiologists are medical doctors that specialize in diagnosing and treating injuries and diseases using medical imaging (radiology) procedures hydrologist - is a scientist who researches the distribution, circulation, and physical properties of the earth's underground and surface waters.

Explanation:

If p is an even integer and q is an odd integer , which of the following must be an odd integer ? Correct Answer 2p+q Let, p = 2, q = 3 p/q = 2/3 2p + q = 7 pq = 6 2 ( p + q) = 10 3p/q = 2

Explanation:

If a light flashes every 6 seconds, how many times will it flash in 3/4 of an hour ? Correct Answer 451 times 3/4 hours = ( 3 × 60 × 60) /4 sec = 2700 sec = 2700/6 = 450

Explanation:

The value of -4-(-10) is how much greater than the value of -10-(-4) ? Correct Answer 12 - 4 - ( - 10) = - 4 + 10 = 6 - 10 - ( - 4) = - 10 + 4 = - 6 6 - ( - 6) = 6 + 6 = 12

Explanation:

If the length of rectangle is increased by 30% and the width is decreased by 30%, then the area will be -- Correct Answer Decreased by 9% Short Cut Formula A + B + AB/100 = 30 - 30 + 30*( - 30)/100 = - 9

Explanation:

If 6 and X have the same mean as 2, 4 and 24, what is the value of X Correct Answer 14 Mean = (6 + x)/2 = ( 2 + 4 + 24)/3 = 10 6 + x = 20 x = 14

Explanation:

Average mark in Math in a class of 40 students is 45. Average mark of all the 30 boys is 50. Then the average mark obtained by the girls is : Correct Answer 30 No. of students = 40 No. of Boys = 30 No. of Girls = 10 Average of 40 stuents = 45 Total of students = 45 *40 = 1800 Aerage of 30 students = 50 Total of 30 = 30 * 50 = 1500 Total of 10 girls = 1800 - 1500 = 300 Average mark of 10 girls = 300/10 = 30

Explanation:

729ml of a mixture contains milk and water in ratio 7 : 2 . How much of the water is to be added to get a new mixture containing half milk and half water ? Correct Answer 405ml 729 * 7/9 = 81 * 7 = 567 = Milk 729 * 2/9 = 81 *2 = 162 = Water Water to be added : 567 - 162 = 405

Explanation:

The sum of 3 consecutive odd numbers is 57. The middle one is - Correct Answer 19 x , x + 2 , x + 4 x + x + 2 + x + 4 = 57 3x = 51 x = 17 The middle number = x + 2 = 17 + 2 = 19

Explanation:

Today is Monday. After 61 days, it will be : Correct Answer Saturday 7*9 = 63 63 days it will come again on Mondy