# Find the least number which when divided by 6, 15 and 18, leave remainder 5 in each case.

LCM is the smallest positive number that is a multiple of two or more numbers.

## Answer: 95 is the least number which when divided by 6, 15 and 18 leaves a remainder 5 in each case.

To find the least number which when divided by 6, 15 and 18 leaves a remainder 5 in each case we have to do the following steps:

- Find the LCM of 6, 15 and 18
- Add 5 in to the LCM

**Explanation:**

Below is the LCM shown for 6,15 and 18 using Prime Factorization

6 = 2 × 3

15 = 3 × 5

18 = 2 × 3 × 3

Thus, the LCM of 6,15 and 18 = 2 × 3 × 3 × 5 = 90

Now, adding 5 to 90, we get 90 + 5 = 95

Verification:

1) 95/6

Quotient = 15

Remainder = 5

2) 95/15

Quotient = 6

Remainder = 5

3) 95/18

Quotient = 5

Remainder = 5