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Without doing any calculation, find the numbers which are surely not perfect squares. iii. 408

Without doing any calculation, find the numbers which are surely not perfect squares.  iii. 408   

Grade:12th pass

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
3 years ago
Dear Student

We know that natural numbers ending with the digits 0, 2, 3, 7 and 8 are not perfect square.


iii. 408⟹ Ends with 8 ∴, 408 is not a perfect square



Thanks

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