Find the common factors of (a) 4,8,and 12 (b) 5,15, and 25


Question: Find the common factors of: (a) 4, 8 and 12 (b) 5, 15 and 25

A factor is nothing but a divisor of the given number.

Answer: Common factors of (a) 4, 8 and 12: 1, 2 and 4 and (b) 5, 15 and 25: 1 and 5

Let's find the common factors of the given numbers

Explanation:

(a) Common Factors of 4,8 and 12

Factors of 4: 1, 2 and 4

Factors of 8: 1, 2, 4 and 8

Factors of 12: 1, 2, 3, 4, 6 and 12

Therefore common factors of 4, 8 and 12 are 1, 2 and 4

(b) Common Factors of 5, 15 and 25

Factors of 5: 1 and 5

Factors of 15: 1, 3, 5 and 15

Factors of 25: 1, 5 and 25

Therefore common factors are 5, 15 and 25 are 1 and 5

Thus,

(a) Common Factors of 4, 8 and 12 are 1, 2 and 4

(b) Common Factors of 5, 15 and 25 are 1 and 5