Find the HCF as a product of prime numbers

Question 1:

A = 2 2 × 5 2 B = 2 2 × 3 2 ×5

HCF = 2 2 ×5

Question 2:

A = 3 3 ×5 B = 2×3×5

HCF = 3×5

Question 3:

A = 2 3 × 5 2 B = 5 3

HCF = 5 2

Question 4:

A = 2×3×5 B = 2 2 ×5

HCF = 2×5