Question

Find the highest common factor (HCF) of 240 and 336.

Answer 1

To answer this question, we will write each number as a multiplication of prime numbers.

Notice that:

`336=2\cdot2\cdot2\cdot2\cdot7\cdot3,`
`240=2\cdot2\cdot2\cdot2\cdot3\cdot5.`

Therefore, the HCF of 240 and 336 is:

`2\cdot2\cdot2\cdot2\cdot3=16\cdot3=48.`

Answer:

`48.`