Multiple choice

Directions: The following problem has a question and two statements which are labelled (A) and (B). Use the data given in (A) and (B) to decide whether the statements are sufficient to answer the question. Then mark answer: Is X positive? (A) X2 - 1 = 0 (B) X3 + 1 = 0

  1. If the question can be solved using any one of the statements.

  2. If the question can be solved using either of the statements.

  3. If the question can be solved using both but not either alone.

  4. If the question cannot be solved using the given statements.
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A Correct answer
AI explanation

Statement (A) gives X^2 = 1, which means X can be either 1 or -1, so it is insufficient to determine if X is positive. Statement (B) gives X^3 = -1, and taking the cube root of both sides results in X = -1, which definitively proves X is not positive. Therefore, the question can be solved using statement (B) alone.

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