Question

write the ones digit in the square of each of the following:- explain in detail
a. 13
b. 27
c. 46
d. 20
f. 31
g. 42
h. 64
i. 38
j. 79
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Answer 1

a. 9 as 3^2 is 9

b. 9 as 7^2 is 49

c. 6 as 6^2 is 36

d. 0 as 0^anything is 0

e.not given

f. 1 as 1^anytjing is 1

g. 4 as 2^2'is 4

h. 6 as 6^ anything is 6

i. 4 as 8^2 is 64

j. 1 as 9^ 2 is 81

By the way if you know concept of cyclicity then it would be quite easy for you to answer more questions.

For now I hope you understand