Question

Find out the highest common factors of 21 and 28.
Find out the highest number which can exactly divide​

Answer 1

Answer:

highest common factor = 7.

exactly Divisible by 7

Answer 2

Answer:

HCF OF 21 & 28 = 7

Step-by-step explanation:

To find HCF prime factorise each number,

21 = 7 x 3

28 = 7 x 4

So we can see that, 7 is common in both these numbers. So 7 is the highest number which can exactly divide 21 & 28