Question
Find the remainder when 727163 is divided by 10.
Answer: Option A
:
A
We need to find out the unit digit of the given number.
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A
We need to find out the unit digit of the given number.
271634=27even number4=(−1)even number4=1
Now the question changes to finding the unit digit of 74n+1. From the power cycle of 7, unit digit will be 7. Hence, the remainder is 7.
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