Answers

2015-01-22T20:29:19+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
First find the smallest number divisible by 12,16,18,21 and 28. It is the LCM of these numbers.
12 = 2*2*3 = 2²*3 
16 = 2*2*2*2 = 2⁴
18 = 2*3*3 = 2*3²
21 = 3*7
28 = 2*2*7 = 2²*7

LCM = 2⁴ * 3² * 7 = 1008

So the number will be 1008+7 = 1015.

So the required number is 1015. If you diminish by 7, it will be divisible by all the given numbers.
0