If {X: 2 d- x d- 19; X integer} and 7 + x = 4 (mod 9), find the highest value of x - SchoolNGR

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If {X: 2 d- x d- 19; X integer} and 7 + x = 4 (mod 9), find the highest value of x

If {X: 2 d- x d- 19; X integer} and 7 + x = 4 (mod 9), find the highest value of x

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A 2
B 5
C 15
D 18

Correct Answer: Option C

Explanation:

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