Which is the least number exactly divisible by 8, 10, 15 and 20?
Show answer & explanation
Correct answer: A
Explanation
8 = 2³
10 = 2 × 5
15 = 3 × 5
20 = 2² × 5
LCM = 2³ × 3 × 5
= 8 × 3 × 5
= 120
Smallest number = 120
SSC GD Constable - 28 April 2026 - Shift 2 • Quantitative Aptitude • Q50
Which is the least number exactly divisible by 8, 10, 15 and 20?
Correct answer: A
Explanation
8 = 2³
10 = 2 × 5
15 = 3 × 5
20 = 2² × 5
LCM = 2³ × 3 × 5
= 8 × 3 × 5
= 120
Smallest number = 120