Question:
A perfect square can never have the following digit in its one’s place.
(a) 1
(b) 8
(c) 0
(d) 6
Solution:
(b) We know that, a number ending with digits 2, 3, 7 or 8 can never be a perfect square. Clearly, a perfect square can never have the digit 8 in its
one’s place.
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