Selected MCQ

Current Question
The decimal form of 1/4 ____.
  • A. 0.2
  • B. 0.25
  • C. 0.4
  • D. 0.5
Correct Answer: B
Explanation:
1 ÷ 4 = 0.25.
Related Question 1
Three cubes of sides 9, 12, and 15 cm are melted to form a new cube. Find its side.
  • A. 21 cm
  • B. 19 cm
  • C. 32 cm
  • D. 18 cm
Correct Answer: D
Explanation:
Total volume = cube of new side.
Related Question 2
A train 200 m long passes a platform 300 m long in 25 seconds. Speed is ____.
  • A. 10 m/s
  • B. 20 m/s
  • C. 25 m/s
  • D. 30 m/s
Correct Answer: B
Explanation:
Total distance = 500 m → speed = 20 m/s.
Related Question 3
In a class with 20 boys and 25 girls, how many pairs of one boy and one girl can be formed?
  • A. 400
  • B. 500
  • C. 600
  • D. 20
Correct Answer: B
Explanation:
20 × 25 = 500 paiRs.
Related Question 4
A train passes a platform in 36 sec. What is its length?
  • A. 120
  • B. 260
  • C. 240
  • D. 220
Correct Answer: C
Explanation:
Length = speed × time.
Related Question 5
A rectangular field 30 m long and 20 m broad is dug uniformly. How deep should it be so that the removed earth forms a cube?
  • A. 12 cm
  • B. 10 cm
  • C. 18 cm
  • D. 24 cm
Correct Answer: B
Explanation:
Volume conservation gives depth = 10 cm.