Question

What will be the unit digit of the squares
of the following number (A) 81
(b)272 (C)799 (D)96980
​

Answer 1

Answer:

a) 81*81

so we will multiply unit digits of 81 = 1*1 = 1

b) 272*272

so we will multiply unit digits of 272 = 2*2= 4

c) 1

d) 0