Railway Recruitment Board Mathematics — Question 1689
Question
What is the HCF of 24 and 36?
- 12
- 6
- 18
- 8
Correct answer
A — 12
Explanation (English)
24 = 2³ × 3 and 36 = 2² × 3². Common factors: 2² × 3 = 12. So HCF = 12.
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