Q70 of 142 Page 88

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

If a2 ends in 5, then a3 ends in 25.

Given: a

Let us take an example:


(35)2 = 1225 (ends in 5)


And (35)3 = 42875 (doesn’t ends in 25)


Hence, the given statement is false.


More from this chapter

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68

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

If x and y are integers such that x2>y2, then x3>y3.

 69

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

If x and y be natural numbers. If x divides y, then x3 divides y3.

 71

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

If a2 ends in 9, then a3 ends in 7.

 72

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

The square root of a perfect square of n digits will have digits, if n is odd.