1.

What will be the units digit of the square of the following numbers?(i) 39 (ii) 297 (iii) 5125 (iv) 7286 (v) 8742

Answer»
NumberSquare of the units digitUnits digit of a squared number
i) 3992 = 9 x 9 = 811
ii) 297 72 = 7 x 7 = 499
Iii) 512552 = 5 x 5 = 255
iv) 728662 = 6 x 6 = 366
v) 87422= 2 x 2 = 44



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