Solutions to GMAT DS Questions

  • Now, if ‘a’ is odd, the first bracket becomes even (since ‘b’ is odd, and odd + odd is even) and thus, the answer will also be EVEN.
  • If ‘a’ is even, the first bracket becomes odd (since odd + even = odd). HOWEVER, there is one more thing we must note. Since ‘a’ and ‘c’ are even, the second bracket is even. Now, if even one number is even, the entire product has to be even (rule).

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