The square of a number with last digit $5$ ends with?

25

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45

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30

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None of these

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Solution

The correct option is A $25$
We know, the square of $5$ , i.e. $5^{2} = 25$ .
Then, Square of a number whose last digit is $5$ , will always end with $25$ .
Hence, option $A$ is correct.

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State true or false.

(i) Cube of any odd number is even.

(ii) A perfect cube does not end with two zeroes.

(iii) If square of a number ends with 5, then its cube ends with 25.

(iv) There is no perfect cube which ends with 8.

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(vii) The cube of a single digit number may be a single digit number.

5

25

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