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If `7x -= 1` (mod 5),then which of the following is a possible value of x?

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If `7x -= 1` (mod 5),then which of the following is a possible value of x?
A. 10
B. 11
C. 12
D. None of these
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Correct Answer - D
Given, `7x -= 1` (mod 5).
`7x - 1` is divisible by 5.
`:. x = 3` or 8 or 13 or....... satisfies the above relation.
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