Q2 of 239 Page 45

Check whether the following are perfect cubes?
400

400

Prime Factorization:

⇒ 400 = 2 × 2 × 2 × 2 × 5 × 5

= 2³ × 2 × 5²

There is only one 1 and two 5’s.

∴ 400 is not a perfect cube.

Choose the correct answer for the following:

The volume of a cube is 64 cm³. The side of the cube is

Choose the correct answer for the following:

Which of the following is false?

Check whether the following are perfect cubes?

216

Check whether the following are perfect cubes?

729

Questions · 239

1. Real Number System

1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 5 5 6 6 1 1 1 1 2 2 2 2 3 3 3 3 1 1 1 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 6 6 1 2 2 2 2 2 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 7 7 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 6 6 6 6 6 7 7 7 7 7 8 8 8 8 8 9 10 10 10 10 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6 6 6 6 7 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 1 1 1 1 1 1 1 2 3

Check whether the following are perfect cubes?400