Question

Find the least 5- digit number which is exactly divisible by 20,25, 30

Answer 1

Given Numbers are 20, 25,and 30.
Least common multiple (LCM) of given numbers is 300.
The smallest 5-digit number = 10,000.
The number exactly divisible by LCM(20,25,30) is also divisible by 20, 25, and 30.
When we divide the smalllest 5-digit number by 300, 100 is left as remainder .To make the number exactly divisible by 300,we add 200 in it and the number obtained is 10,200.
Hence,10,200 is the smallest 5-digit number exactly divisible by 20, 25, and 30.

Answer 2

The least 5 digit number exactly divisible by 20 25 30 is...10200