Find the HCF as a product of prime numbers

Question 1:

A = 2 2 × 3 3 B = 2 3 × 3 2

HCF = 2 2 × 3 2

Question 2:

A = 2 2 × 3 2 ×5 B = 2× 3 3

HCF = 2× 3 2

Question 3:

A = 3 3 ×5 B = 2×3× 5 2

HCF = 3×5

Question 4:

A = 3× 5 2 B = 2 2 ×3×5

HCF = 3×5