India Languages, asked by pradeep135, 1 year ago

find the unit disgit in the expression

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Answered by samita1

$the \: unit \: digit \: of \: {55}^{725} is \: 5$
$the \: unit \: digit \: in \: {73}^{5810} is \: 9$
$and \:$
$the \: unit \: digit \: in \: {22}^{853} is \: 2$

so, the unit Digit of the expression is given by
5+9+2 = 16

hence 6 is the unit Digit of the expression

FOR MORE QUERIES... COMMENT

samita1: firstly we divide the power by unit digit

samita1: 73 to the power 5810

samita1: we need to divide 5810 by 73

samita1: sry

samita1: we need to divide 5810 by 3

samita1: we get remainder as 2

samita1: now we have to multiply 3 two times, like, 3×3 = 9

samita1: and 9 is our unit Digit

samita1: similarly in other questions too

samita1: hope this will help you

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