SAT Math Multiple Choice Question 107: Answer and Explanation

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Question: 107

2. The number of soil samples, s, that Sonal needs for an experiment must be greater than 6 but less than or equal to 13. Which of the following represents an acceptable number of soil samples for Sonal's experiment?

  • A. 6 < s < 13
  • B. 6 ≤ s < 13
  • C. 6 < s ≤ 13
  • D. 6 ≤ s ≤ 13

Correct Answer: C

Explanation:

C Sonal needs s soil samples. If according to the question, he must have more than 6 samples, then s > 6. Also according to the question, he may have no more than 13 samples, so s ≤ 13. Combining these two expressions, we find that 6 < s ≤ 13. This is (C).

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