Selected MCQ

Current Question
Nine men went to a hotel. Eight spent Rs. 3 each, and the ninth spent Rs. 2 more than the average. What was the average expense?
  • A. Rs. 29.25
  • B. Rs. 30.25
  • C. Rs. 32
  • D. Rs. 35
Correct Answer: A
Explanation:
Let average = x → solve 8×3 + (x+2) = 9x → x = 29.25.
Related Question 1
Two automobiles 150 km apart move toward each other. Time to meet is ____.
  • A. 2.5 hr
  • B. 2 hr
  • C. 1.75 hr
  • D. 1.5 hr
Correct Answer: D
Explanation:
Relative speed method.
Related Question 2
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 3
A student scores 60 in Maths and Physics. Chemistry is 20 marks more than Maths. Find the average marks.
  • A. 40
  • B. 30
  • C. 25
  • D. Data inadequate
Correct Answer: A
Explanation:
Total = 60 + 60 + 80 = 200 → avg = 40.
Related Question 4
A tower of height 15 m makes an angle of elevation 60°. Find the distance from the base.
  • A. 5 m
  • B. 8 m
  • C. 10 m
  • D. 12 m
Correct Answer: C
Explanation:
tan60 = h/d → d = 15/√3 = 10 m.
Related Question 5
The tens digit of a two-digit number is 2 more than the units digit. The number is 7 times the sum of its digits. Find the units digit.
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Correct Answer: B
Explanation:
Let the unit digit = x, solve Equation.