Question

what will be the unit digits of the following

Answer 1

$\textbf{Solution :}$
__________

ⓐ 71²

Unit digit of 71² = 1

As, 1² = 1

ⓑ 59²

Unit digit of 59² = 1

As, 9² = 81
We will take only 1 because the que. asked for unit digit means digit in ones place

ⓒ 124²

Unit digit of 124² = 6

As, 4² = 16

ⓓ 86²

Unit digit of 86² = 6

As, 6² = 36

$\textbf{Note :}$ Here we are only taking the digit in ones place.

i.e. 86²

We will take only 6²

•°• 6² = 36
means 6

So, unit digit of 86² = 6

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$\boxed{Hope\:it\:helps\:you!}$
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★ Be Brainly ★

Answer 2

Hey Matey!

__________

a) 71² = 5041

∴ Unit digit of 71² is 1

b) 59² = 3481

∴ Unit digit of 59² is 1

c) 124² = 15376

∴ Unit digit of 124² is 6

d) 86² = 7396

∴ Unit digit of 86² is 6

Hope it helps ^_^