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.
If x and y are integers, is x^2 – y^2 divisible by 7?
- When x – y is divided by 7, the remainder is 2
- When x + y is divided by 7, the remainder is 5
- Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
- Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
- BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
- EACH statement ALONE is sufficient
- Statements (1) and (2) TOGETHER are NOT sufficient
Have a go at answering this and then review your answer.
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