Identifying Perfect Square Numbers by Observing Their Last Digit
Which of the ...
Question
Which of the following is a perfect square?
A
4602
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B
9277
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C
2401
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D
9748
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Solution
The correct option is C 2401 All perfect squares end with 1, 4, 5, 6, 9 or 00. A number that ends with 2, 3, 7 or 8 cannot be a perfect square. So, 4602, 9277, and 9748 can’t be perfect squares. 2401 ends with 1, so it can be a perfect square.