Which of the following will have 1 in its unit's place? Options: A . &nbsp1232 B . &nbsp1612 C . &nbsp822 D . &nbsp772

Which of the following will have 1 in its unit's place?

Question

Which of the following will have 1 in its unit's place?

Options:

A . 1232

B . 1612

C . 822

D . 772

Answer: Option B
:
B

The square of a number will end in 1,

if the digit in the units place is either

1 or 9 .

We know that 1^{2} = 1 and 9^{2} = 81.

Among the given options, 161 has 1 in its units place.

Hence, (161)^{2} will have 1 in its units place.

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