Question

List out the factors and then , find the common factors for the following :-

a) 18 and 21

b) 27 and 54

c) 36 and 42​

Answer 1

Step-by-step explanation:

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Answer 2

18 = 3×3×2 and 21 = 3×7

Common factor is 3

27 = 3×3×3 and 54 = 3×3×3×2

Common factor is 3×3×3 = 27

36 = 2×2×3×3 and 42 = 2×3×7

Common factor is 2×3 = 6