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- What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?
Question 1:
What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ? A. 1260
B. 630
Feedback L.C.M. of 12, 18, 21 30
= 2 x 3 x 2 x 3 x 7 x 5 = 1260.
Required number = (1260 ÷ 2)
= 630.
= 2 x 3 x 2 x 3 x 7 x 5 = 1260.
Required number = (1260 ÷ 2)
= 630.
C. 2524
D. None of these
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