Question 2 (iii)
Without doing any calculation, find the numbers which are surely not perfect squares:

408

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Solution

Since, all perfect square numbers contain their unit’s place digits 0,1,4,5,6 and 9.

Given number 408 has its unit digit 8.So it not a perfect square number.

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Similar questions

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

(i) 153 (ii) 257

(iii) 408 (iv) 441

153

257

408

441

Without doing calculation, find the numbers which are surely not perfect squares.
(i) $153$
(ii) $257$
(iii) $408$
(iv) $441$

Question 2 (iii)
Find the number of digits in the square root of each of the following numbers (without any calculation):

4489

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