Question

Juullules by observing the numbers and their syuan
TRY THESE
What will be the "one's digit" in the square of the following numbers?
(iv) 99880
6) 1234
(v) 21222
(ii) 26387
(vi) 9106
(ii) 52698​

Answer 1

Answer:

(i) ∵ Ending digit = 4 and 42 = 16

∴ (1234)2 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

∴ (52698)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.