Question
Which of the following will have 1 in its unit's place?
Answer: Option B
:
B
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:
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 12=1 and 92=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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