Que: If a number is 2² x 3¹ x 5⁰ and b is 2² x 3¹ x 5¹ then hcf of a, b is? a. 2² x 3¹ x 5¹ b. 2² x 3² x 5² c. 2¹ x 3¹ x 5⁰ d. 2² x 3² x 5⁰ Answer: 2¹ x 3¹ x 5⁰