Question

What will be the unit digit of the square of 7649?

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Answer 1

Answer:

the unit digit will be 1

Answer 2

$\begin {tabular} {|c|c|}</p><p>\cline {1-2} Unit digit in a number &unit digit of its square \\</p><p>\cline {1-2} 0&0\\</p><p>\cline {1-2} 1&1 \\</p><p>\cline {1-2} 2& 4\\</p><p>\cline {1-2} 3& 9\\</p><p>\cline {1-2} 4 & 6 \\</p><p>\cline {1-2} 5 & 5 \\</p><p>\cline {1-2} 6&6 \\</p><p>\cline {1-2} 7&9\\</p><p>\cline {1-2} 8&4\\</p><p>\cline {1-2} 9&1 \\</p><p>\cline {1-2}</p><p>\end {tabular}$

$Given \: number \: 7649$

$Unit \:place \:digit \:in \: given \: number = 9$

$Unit \:digit \: of \:the \: square \:of \:7649\green {= 1}$

Therefore.,

$\red{Unit \:digit \: of \:the \: square \:of \:7649}\green{= 1}$

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