Question

how to calculate smallest 5 digit no. which is exactly divisible by 7,12,15,16

Answer 1

Smallest number means u need to take out LCM

Answer 2

To get a number like that, you have to find the LCM of 7, 12, 15, 16 ,i.e., 1680. But you need a 5 digit number. So you need to multiply it with the smallest number which makes it a 5 digit number, i.e., 6 and 1680*6 = 10080. Therefore, the answer is 10080.

Hope it helps :)