Question

Which of the following can not be the unit digit of a square number :
(a) 2 (b) 4 (c) 6 (d) 9

Answer 1

Answer:

c) $6^{2}$ = 36$\sqrt$ is the Answer

Step-by-step explanation:

a) $2^{2}$ = 4 x

b) $4^{2}$ = 16$\sqrt$

c) $6^{2}$ = 36$\sqrt$

d) $9^{2}$ = 81 $\sqrt$

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