Tick (✓) the correct answer

Question:

Tick (✓) the correct answer

Which of the following cannot be the unit digit of a perfect square number?

(a) 6

(b) 1

(c) 9

(d) 8

Solution:

(d) 8

According to the property of squares, a perfect square cannot have 2, 3, 7 or 8 as the unit digit.

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