Question

find the smallest number when divided by 12,20 and 36 will leave a remainder 7 in each case.

Answer 1

First find the L.C.M. of 12,20,36 and you got L.C.M. is 180 and add 7 that is 180+7 = 187 u also check by divide 187 by 12, 20,36

Answer 2

To find the number take LCM of these three nos.
12,20 and 36
LCM=180
Now add 7 to 180 which is equal to 187
So, the smallest no when divided by 12,20 and 36 leaves remainder 7 will be 187.