Selected MCQ

Current Question
A question paper has 10 true/false questions. How many answer patterns are possible?
  • A. 20
  • B. 40
  • C. 512
  • D. 1024
Correct Answer: D
Explanation:
Each question has 2 choices ⇒ 2¹⁰ = 1024.
Related Question 1
In a test with 4 MCQs, each having 5 choices, how many answer patterns are possible?
  • A. 19
  • B. 120
  • C. 625
  • D. 1024
Correct Answer: C
Explanation:
Total combinations = 5⁴ = 625.
Related Question 2
A student solves q questions in 1/h hour. How many questions in h hours?
  • A. hq
  • B. hq²
  • C. 1/hq
  • D. h/q
Correct Answer: B
Explanation:
Rate × time gives total.
Related Question 3
A question paper consists of five problems, each having three internal choices. In how many ways can a candidate attempt at least one problem?
  • A. 63
  • B. 511
  • C. 1023
  • D. 15
Correct Answer: C
Explanation:
Total ways = (3+1)⁵ − 1 = 1023.
Related Question 4
A candidate attempts 8 questions and gets 50% marks. Total questions are ____.
  • A. 8
  • B. 10
  • C. 15
  • D. 16
Correct Answer: B
Explanation:
Solving the proportion gives a total of 10 questions.
Related Question 5
12 inches equals how many centimeters?
  • A. 30.48
  • B. 29
  • C. 34.12
  • D. 24
Correct Answer: A
Explanation:
1 inch = 2.54 cm.