Selected MCQ

Current Question
The next number in sequence 2, 4, 8, 16, ____.
  • A. 20
  • B. 24
  • C. 30
  • D. 32
Correct Answer: D
Explanation:
Multiply by 2.
Related Question 1
Find HCF of two numbers if last divisor is 41 and next is ____.
  • A. 700,400
  • B. 820,360
  • C. 800,500
  • D. 820,369
Correct Answer: D
Explanation:
Euclid’s method leads to these values.
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 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.
Related Question 5
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.