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Question


Find the remainder when 10100 is divided by 7


Options:
A .   4
B .   3
C .   2
D .   -1
E .   none of these
Answer: Option A
:
A
Option (a)
Euler's number of 7 ( a prime number) is 71=6. make the numerator power the nearest
multiple of 6. The question changes to
10967R×1047R
part a will yield a remainder 1 and 1047R can be found using frequency method
1017R=3
1027R=2
1037R=67R=1
1047R=47R=4
answer = option a

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