Question

Which of the following numbers is not a perfect cube? (i) 8 (ii) 27 (iii) 36 (iv) 125​

Answer 1

Answer:

36

Step-by-step explanation:

8=2³

27=3³

125=5³

36 is not a perfect cube

Answer 2

Perfect Cube

Step-by-step explanation:

Perfect cube is any integer that is equal to another integer raise to the power three.

Example:

• 2³ = 2 × 2 × 2 = 4 × 2 = 8, therefore 8 is a perfect cube that is equal to 2 raise to the power 3.
• 3³ = 3 × 3 × 3 = 9 × 3 = 27, therefore 27 is a perfect cube that is equal to 3 raise to the power 3.
• 4³ = 4 × 4 × 4 = 16 × 4 = 64, therefore 64 is a perfect cube that is equal to 4 raise to the power 3.
• 5³ = 5 × 5 × 5 = 25 × 5 = 125, therefore 125 is a perfect cube that is equal to 5 raise to the power 3.

So, among the given options, 8, 27 and 125 are perfect cube.

36 is not a perfect cube.