GMAT Problem Solving
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Source: OG11th
Level: 3
If the sum of n consecutive integers is 0,which of the following must be true?
I. n is an even number.
II. n is an odd number.
III. The average (arithmetic mean) of the n integers is 0
- A I only
- B II only
- C III only
- D I and III
- E II and III