1.

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

Answer» \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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\boxed{Hope\:it\:helps\:you!}
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