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Byju's Answer
Standard VIII
Mathematics
Letters for Digits
Find the unit...
Question
Find the unit digit in the square of the numbers
81
and
79
.
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Solution
The unit digit of the number
81
2
is the unit digit of
1
2
which is
1
.
Similarly the unit digit of the number
79
2
is the unit digit in
9
2
i.e. unit digit in
81
i.e. is
1
.
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