"What will be the least number which when doubled will be exactly divisible by 12, 18, 21
Channel: Doubtnut
Date: 2020-04-05

"What will
 be the least number which when doubled will be exactly divisible by 12, 18,
 21 and 30?
(a)
 196 (b) 630 (c) 1260 (d) 2520"