Question

find the common factors of the following group of numbers. a) 12 and 15 b) 21 and 24​

Answer 1

Answer:

12 and 15 are divisible by 3

21 and 24 are divisible by 3 also

Step-by-step explanation:

12/3 = 4

15/3 = 5

21/3 = 7

24/3 = 8

Answer 2

Answer :-

• 12 and 15 ➞ 3.
• 21 and 24 ➞ 3.

Explanation :-

Given Numbers :

• 12 and 15.
• 21 and 24.

To Find :

We have to find the common factors of these numbers.

Solution :

(A) 12 and 15.

12 = 2 × 3 × 2.

15 = 3 × 5.

Here, we can see that,

3 is common in both of the numbers.

So, Common Factor = 3.

(B) 21 and 24.

21 = 3 × 7.

24 = 3 × 2 × 2 × 2.

Here, we can see that,

3 is again common in both of them.

So, Common Factor = 3.

Therefore,

● Common Factor in 12 and 15 = 3.

● Common Factor in 21 and 24 = 3.