Question

what will be the unit digit of the square of the following number 799

Answer 1

$\textbf{Solution :}$
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The number = 799

It's unit digit = 9

•°• The unit digit of sq. of 799

= 9²

= 9 × 9

= 81

$\textbf{We will not take the number 81}$
$\textbf{ as unit digit instead we will take 1}$
$\textbf{because the question asked for}$
$\textbf{unit digit means only 1 digit}$

So, the unit digit of sq. of 799 is 1

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Answer 2

Answer:

it is correct

Step-by-step explanation: