Selected MCQ

Current Question
In a hospital, injections last 15 days. If the number of patients increases, for how many days will they last?
  • A. 10
  • B. 15
  • C. 16
  • D. 12
Correct Answer: A
Explanation:
Increased consumption reduces duration.
Related Question 1
12 children take 16 days to finish work. Time for the same work with a different number is ____.
  • A. 3 days
  • B. 4 days
  • C. 6 days
  • D. 8 days
Correct Answer: C
Explanation:
Work is inversely proportional.
Related Question 2
Three consecutive odd integers have a sum such that the last two exceed the first by 13. Find numbeRs.
  • A. 9,11,13
  • B. 11,13,15
  • C. 13,15,17
  • D. 7,9,11
Correct Answer: D
Explanation:
Solve a linear relation.
Related Question 3
A petrol tank lasts 10 days. If consumption patterns change, how long will it last?
  • A. 5 days
  • B. 6 days
  • C. 7 days
  • D. 8 days
Correct Answer: D
Explanation:
Adjusting the consumption rate leads to a duration of 8 days.
Related Question 4
The sum of five numbers is 655. The average of the first two is 85. Find the sum of the last three.
  • A. 180
  • B. 170
  • C. 190
  • D. 175
Correct Answer: A
Explanation:
Subtract known sum.
Related Question 5
The product of two numbers is 2028, and their HCF is 13. How many such pairs exist?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Correct Answer: B
Explanation:
Factorization yields two valid coprime pairs.