GMAT Challenge Question

This week’s GMAT challenge from PrepForTests.com is a data sufficiency question.

Work out which of the statements 1 and 2 are required to answer the question.

Is n even?

  1. n/2 – 1 is odd
  2. 2n + 1 is odd
  1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
  2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
  3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
  4. EACH statement ALONE is sufficient
  5. Statements (1) and (2) TOGETHER are NOT sufficient

Have a go at answering this and then review your answer.

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