Find the square of 39. Options: A . &nbsp78 B . &nbsp1500 C . &nbsp1521 D . &nbsp1530

Find the square of 39.

Question

Find the square of 39.

Options:

A . 78

B . 1500

C . 1521

D . 1530

Answer: Option C
:
C

The number 39 ends with 9. And 9^{2} = 81 which ends with 1. Hence, 39^{2} should have 1 in the units place.

We can observefrom options that only 1521 satisfies this. Hence 1521 is the answer.

Alternatively, 39 should be multiplied with 39 to obtain the square.

So, 39 \times 39 = 1521.

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