Selected MCQ

Current Question
A number exceeds its 2/5 by 10. What is the number ____.
  • A. 20
  • B. 25
  • C. 30
  • D. 35
Correct Answer: B
Explanation:
x − 2x/5 = 10 → x = 25.
Related Question 1
Sum of squares of two consecutive integers exceeds product by 91. Find numbeRs.
  • A. 9,10
  • B. 10,11
  • C. 11,12
  • D. 12,13
Correct Answer: A
Explanation:
Form Equation and solve.
Related Question 2
40% of a number exceeds 20% of 650 by 190. Find the number ____.
  • A. 600
  • B. 700
  • C. 800
  • D. 900
Correct Answer: C
Explanation:
Solve a linear Equation.
Related Question 3
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 4
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 5
Three flags of different coloRs. Number of signals using 1 or more flags is ____.
  • A. 6
  • B. 9
  • C. 15
  • D. 18
Correct Answer: C
Explanation:
Total combinations excluding empty = 2³ −1.