What is the smallest positive integer that is divisible by all 12, 15 and 20?
Show answer & explanation
Correct answer: A
Explanation
prime factorization
12 = 2² × 3
15 = 3 × 5
20 = 2² × 5
LCM = 2² × 3 × 5 = 4 × 3 × 5 = 60
SSC GD 2026 PYQ — Question 5
SSC GD Constable - 29 April 2026 - Shift 3 • Reasoning • Q5