A candidate answers a multiple-choice question by guessing. There are 4 choices. The probability of answering correctly is:

Bangladesh follows which of the following legal systems in administering justice through its courts?

Which river has earned the title "Sorrow of North Bengal" owing to its unpredictable course severe floods, and extensive damage to agriculture and settlements?

For official economic reporting and policy analysis, the national income of Bangladesh is mainly measured and complied by which organization?

A club collected exactly USD 599 from its members. If each member contributed at least USD 12, what is the greatest number of members the club could have?

When a number is divided by 7, the remainder is 3. What will be the remainder when twice the number plus 5 is divided by 7?

A two-digit number is 4 times the sum of its digits. When the digits are reversed, the new number is 18 greater than the original number. What is the original number?