Question

What will be the smallest number which when doubled will be divisible by 6 9 15?

Answer 1

Answer:

45

Step-by-step explanation:

First let's find the smallest number which will be divisible by 6,9,15

In other words, let's find the L.C.M(lowest common multiple)

The LCM of the 3 numbers

2| _6 9 15_

3|_ 3 9 15_

3|_1 3 5_

5|_1 1 5_

_1. 1. 1

Therefore, LCM=2*3*3*5 = 90

we were asked to find the smallest number, which when doubled will be divisible by 90

If X if the required number,.

2x = 90

x = 45