Question

What will be the "one" s "digit" in the square of the following numbers?
1)1234
2)26387
3) 52698
4)99880
5)21222
6)9106

Answer 1

Dear student,
(1) Ending digit = 4 and 42 = 16

: (1234) will have 6 as the one's digit.

(ii) : Ending digit is 7 and 72 = 49

: (26387)2 will have 9 as the one's digit.

(iii) Ending digit is 8, and 82 = 64

: (52692)2 will end in 4.

(iv) Ending digit is 0.

(99880)2 will end in 0.

(v): 22 = 4

: Ending digit of (21222)2 is 4.

(vi) : 62 = 36

: Ending digit of (9106)2 is 6.

Regards