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Subject Test Math 1

Question 19 of 32

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SAT Subject Test

Twenty students have each sampled one or more of three kinds of candy bars that a school store sells. If 3 students have sampled all three kinds, and 5 have sampled exactly two kinds, how many of these students have sampled only one kind?

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8

Correct Answer: 
No

12

Correct Answer: 
Yes

15

Correct Answer: 
No

17

Correct Answer: 
No

18

Correct Answer: 
No

The correct answer is B.

It is given that 3 students have sampled all three kinds of candy bars and that 5 students have sampled exactly two kinds, so a total of 3 plus 5 equals 8 students have sampled more than one kind of candy bar. Since 20 students have sampled one or more of the three kinds of candy bars, the number of students that have sampled only one kind is 20 minus 8 equals 12.

Question Difficulty: 
medium