GMAT Data Sufficiency Questions

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Below are a sample set of data sufficiency questions similar to those found in the GMAT math section. Due to the relatively small number of questions that we have published here, we strongly recommend that you only use these to augment your GMAT preparations.

Use the following answer choices for the questions below.

  1. Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
  2. Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
  3. Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
  4. Each statement alone is sufficient to answer the question.
  5. Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.

1) If the average size of 3 accounts is $1 million, is the smallest account less than $500,000?

  1. The largest account is $1.3 million.
  2. One of the accounts is $0.7 million.

2) Is the product of x and y greater than 60?

  1. The sum of x and y is greater than 60.
  2. Each of the variables is greater than 2.

3) What is the value of y?

  1. y - 3 = 2
  2. y2 = 25

4) What was the percent increase of Company A’s stock between June 1 and June 30, 2000?

  1. The stock gained $5 in value during June 2000.
  2. The stock rose 12% during the first half of the month.

5) Al went to the mall and spent $100.  How many items did he buy that cost $20?

  1. All of Al’s purchases were for items that cost $20 and $30.
  2. Al bought more than one $30 item.

6) Which company reported the larger increase in earnings?

  1. Company A reported that its earnings increased by 5%.
  2. Company B reported that its earnings increased by 7%.

7) Is x a prime number?

  1. x is an even number.
  2. x can not be divided evenly by an odd number other than 1.

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