SOLUTION: if x is an integer and (x+7)/2 is an integer , which of the following must be true ? I x is odd II x is a multiple of 7 III (x+5)/2 is an integer (A

Question 304534: if x is an integer and (x+7)/2 is an integer , which of the following must be true ?
I x is odd
II x is a multiple of 7
III (x+5)/2 is an integer
(A) I only
(B) II only
(C) III only
(D) I and II
(E) I and III

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
x is an integer and (x+7)/2 is an integer , which of the following must be true ?
I x is odd------true
II x is a multiple of 7------x could be 5
III (x+5)/2 is an integer-----not if x = 4
------
Ans: A
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Cheers,
Stan H.
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(A) I only
(B) II only
(C) III only
(D) I and II
(E) I and III

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