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Without doing any calculation, find the numbers which are surely not perfect squares. ii. 257 oi;io;0[’0

Without doing any calculation, find the numbers which are surely not perfect squares.  ii. 257  
oi;io;0[’0

Grade:12th pass

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
29 days ago
Dear Student

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



ii. 257⟹ Ends with 7 ∴, 257 is not a perfect square


Thanks

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