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.

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