GMAT 考满分题库

Magoosh - 数学PS - 378
If p and q are two different odd prime numbers such that p < q, then which of the following must be true?
  • A(2p + q) is a prime number
  • Bp + q is divisible by 4
  • Cq – p is divisible by 4
  • D(p + q + 1) is the difference between two perfect squares of integers
  • E$$p^{2}+q^{2}$$ is the difference between two perfect squares of integers
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正确答案: D

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