Question

Find smallest 5 digits number which is exactly divisible by 12,16 and20

Answer 1

LCM of 16 = 2^4.
LCM of 20 = 2^2* 5.
LCM of 12,16,20 = 240.
The smallest 5 digit number which is a multiple of 240 is 10080

Answer 2

L.C.M OF 12,16&20=240
divide 240 with 10000( remainder is 160)
add the remainder you get after division
10000+160=10160