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  4. In the group 1, 2, 3, 4, 5, 6 under multiplication modulo 7, if 5x = 4, then x =

Q. In the group under multiplication modulo , if , then

COMEDK COMEDK 2010Relations and Functions - Part 2 Report Error

Solution:

is a group under multiplication and 1 is the identity element

Now,
(mod 7)

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