Grade 12th pass8 grade maths
Without doing any calculation, find the numbers which are surely not perfect squares. i. 153 ii. 257 iii. 408
Without doing any calculation, find the numbers which are surely not perfect squares. i. 153 ii. 257 iii. 408
1 Answer
Harshit Singh
Dear Student
We know that natural numbers ending with the digits 0, 2, 3, 7 and 8 are not perfect square.
i. 153⟹ Ends with 3. ∴, 153 is not a perfect square
ii. 257⟹ Ends with 7 ∴, 257 is not a perfect square
iii. 408⟹ Ends with 8 ∴, 408 is not a perfect square
Thanks
We know that natural numbers ending with the digits 0, 2, 3, 7 and 8 are not perfect square.
i. 153⟹ Ends with 3. ∴, 153 is not a perfect square
ii. 257⟹ Ends with 7 ∴, 257 is not a perfect square
iii. 408⟹ Ends with 8 ∴, 408 is not a perfect square
Thanks
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