Selected MCQ

Current Question
60% of a number added to 120 gives the same number. Find the number ____.
  • A. 300
  • B. 200
  • C. 400
  • D. 500
Correct Answer: A
Explanation:
x = 120 + 0.6x → solve.
Related Question 1
75% of a number added to 75 equals the number. Find the number ____.
  • A. 150
  • B. 200
  • C. 225
  • D. 300
Correct Answer: D
Explanation:
x = 75 + 0.75x.
Related Question 2
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 3
Three numbers are co-prime. The product of the first two is 551. Find the third.
  • A. 75
  • B. 81
  • C. 85
  • D. 89
Correct Answer: C
Explanation:
Factorization approach.
Related Question 4
Three dice are thrown. Find the number of outcomes where the sum is 10.
  • A. 36
  • B. 81
  • C. 91
  • D. 116
Correct Answer: C
Explanation:
Count valid combinations.
Related Question 5
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.