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Quantitative - Mathematics - Data Sufficiency:

Data Sufficiency

MCQ - 30-4006

Question:

Is x > 0 ?

  1. -2x < 0
  2. x³ > 0

  1. statement 1 alone is sufficient, but statement 2 alone is not sufficient to answer the question
  2. statement 2 alone is sufficient, but statement 1 alone is not sufficient to answer the question
  3. both statements taken together are sufficient to answer the question, but neither statement alone is sufficient
  4. statement 2 alone is sufficient, but statement 1 alone is not sufficient to answer the question
  5. statements 1 and 2 together are not sufficient, and additional data is needed to answer the question

Correct Answer: D

Explanation:

The statement that x is greater than zero means that x is positive. If we multiply a positive number by a negative number the product is negative: this is what we get from (1), which thus tells us that x is positive. The answer must be A or D. The cube of a positive number is positive; the cube of a negative number is negative, and so (2) tells us that x is positive. And so the answer is D.

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Record Performance

34 MCQ for effective preparation of the test of Data Sufficiency of Data Sufficiency section.

Read the MCQ statement: Is x > 0 ? -2x x³ > 0 , keenly and apply the method you have learn through the video lessons for Data Sufficiency to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 30-4006.

How to Answer

Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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