Find the HCF as a product of prime numbers

Question 1:

A = 2 3 ×3×5 B = 2 5 ×5

HCF = 2 3 ×5

Question 2:

A = 3 4 B = 3 3 ×5

HCF = 3 3

Question 3:

A = 2 3 ×3×5 B = 3× 5 2

HCF = 3×5

Question 4:

A = 2 4 ×5 B = 2 4 × 3 2

HCF = 2 4