Study HubHubPage 1/4Scan verified MCQs with the answer highlighted, then open explanations when you want the reasoning.
Read Mode
Set Theory (Power Set)
The number of elements in the power set of {1, 2, 3} is:
The power set of a set with n elements contains 2^n elements. Since the set {1, 2, 3} has 3 elements, its power set has 2^3 = 8 elements.
Read Mode
Bangladesh Parliament
What is the name of the Bangladesh Parliament?
The official name of the Bangladesh Parliament is 'Jatiya Sangsad,' which is the unicameral national legislature of Bangladesh. The other options are incorrect or unrelated terms.
Read Mode
Environment (Earth Day)
The first Earth Day was observed in the year:
The first Earth Day was observed on April 22, 1970, marking the beginning of the modern environmental movement. Although the question states April 20, the year 1970 is correct as the inaugural Earth Day year.
Read Mode
Grammar (Conditionals)
Sohail could have done better on the test ___.
Option B correctly uses the past perfect tense 'had discussed' in the if-clause, which is the proper form for the third conditional expressing a past unreal condition. The other options are grammatically incorrect or less appropriate.
Read Mode
International Organizations (NATO)
The official languages of NATO are:
The official languages of NATO are English and French, which are used for all official communications and documents within the organization.
Read Mode
Ratio and Proportion
Arif, Hafiz, and Haider share Rs. 2560. Hafiz's share is four times as much as Arif's, and Arif's share is one-third of Haider's. How much is Arif's share?
Let Arif's share be x. Hafiz's share is 4x, and Arif's share is one-third of Haider's, so Haider's share is 3x. Total shares: x + 4x + 3x = 8x = 2560, so x = 2560/8 = 320. Therefore, Arif's share is Rs. 320.
Read Mode
Current Affairs
Which country is the world's top supplier of weapons?
The United States is widely recognized as the world's top supplier of weapons, leading global arms exports by a significant margin compared to other countries such as Russia, Israel, and Germany.
Read Mode
Geography/Infrastructure (Airports)
The largest airport in the world is:
The term 'largest airport' can refer to different metrics such as land area, passenger traffic, or terminal size. The largest airport in the world by land area is King Fahd International Airport in Dammam, Saudi Arabia, covering about 776 square kilometers. Dubai International Airport is one of the busiest airports by international passenger traffic and has the world's largest terminal by floor space, but it is not the largest airport overall by land area or total passenger traffic. The busiest airport by total passenger traffic in 2024 is Hartsfield-Jackson Atlanta International Airport in the USA. Therefore, none of the given options (New York airport, Frankfurt airport, Dubai Airport) is the largest airport in the world by the broadest definition. Hence, the correct answer is 'D' (None of these).
Read Mode
Vocabulary (Antonyms)
Which word is the opposite of 'valiant'?
The word 'valiant' means showing courage or determination. The opposite is 'cowardly', which means lacking courage. Therefore, option B is the correct antonym.
Read Mode
Geography (Mountains)
The world's highest mountain is in:
Mount Everest, the world's highest mountain, is located in Nepal (on the border between Nepal and China). Therefore, the correct answer is Nepal.