Question on: WAEC Mathematics - 2015
If {X: 2 d- x d- 19; X integer} and 7 + x = 4 (mod 9), find the highest value of x
A
2
B
5
C
15
D
18
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Correct Option: C
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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
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