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Ravi claims that if you write three-digit perfect cubes, very few exist. List how many three-digit numbers (from 100 to 999) are perfect cubes.

Class 8Perfect CubesCubes and Roots

A5
B4
C10
D6

Step-by-Step Solution

Three-digit cubes are

5^{3} = 125, 6^{3} = 216, 7^{3} = 343, 8^{3} = 512, 9^{3} = 729

. That is 5 numbers

(4^{3} = 64

is two-digit,

1 0^{3} = 1000

is four-digit).

Answer: A) 5

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