Mathematics
NULL
Medium
Question
What is the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?
A
196
B
630
✓ Official correct answer
C
1260
D
2520
Community credibility
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A
196
No member explanations yet for this option.
B
630
No member explanations yet for this option.
C
1260
No member explanations yet for this option.
D
2520
No member explanations yet for this option.
Explanation
2n = LCM(12,18,21,30) = 1260 ⇒ n = 630.