GMAT Data Sufficiency
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Source: Knewton
Level: 4
Each of the numbers a, b, c, d is equal to -1, 0, or 1. What is the value of a + b + c + d?
1.
2.
- A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- D EACH statement ALONE is sufficient.
- E Statements (1) and (2) TOGETHER are NOT sufficient.