easy · GMAT Quantitative Reasoning
A runner completes n laps on the first day and n + 1 laps on the next day, where n is a positive integer.
Regardless of the value of n, what is the parity of the product of the laps completed on these two days?
- The product is always odd.
- The product is even only if n is even.
- The parity depends on whether n is prime.
- The product is odd only if n is odd.
- The product is always even.
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