Q. 673.7( 3 Votes )

# State whether the statements are true (T) or false (F).

For an integer a, a^{3} is always greater than a^{2}.

Answer :

Given: integer a

For an integer (-1)

(-1)^{2} = 1

And (-1)^{3} = -1

-1 < 1

Here we see (-1)^{3} not greater than (-1)^{2}

Hence, the given statement is false.

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Which of the following numbers are not perfect cubes?

(i) 64

(ii) 216

(iii) 243

(iv) 1728

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