The squares of which of the following would be odd numbers?

(i) 431 (ii) 2826


(iii) 7779 (iv) 82004

We know that the Square of an odd number is odd and the square of an even number is even.

Therefore,


Here, 431 and 7779 are odd numbers


Hence, the square of 431 and 7779 will be an odd number


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