Which of the following are obviously not perfect squares?

3249

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9604

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7928

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2025

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Solution

The correct option is C
7928

Perfect squares never have 8 at the units place as the square of any number will never give 8 in the unit's place.

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Similar questions

Question 2 (iii)

The following number is obviously not a perfect square. Give reasons.

7928

1057

23453

7928

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