Question

Find the least number which when increased by 7is exactly divisible by 12 18 and 20

Answer 1

First take LCM of 20,18, and 12

20= 2^2x5

18= 3^2x2

12=2^x3

LCM= 2^2x3^2x5

= 160

here it is least number when increased by 7.

So we need to SUBTRACT 7 from 160

Therefore, the answer is 153.

Hope it helps

Answer 2

Answer:

The correct answer is in this pic. See