SOLUTION: There are 14 students in a class that has just completed an exam. The exam grades ranged from 55 to 100. If you choose 3 students from the class, what is the probability that the s
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Question 358096: There are 14 students in a class that has just completed an exam. The exam grades ranged from 55 to 100. If you choose 3 students from the class, what is the probability that the sum of their exam scores is less than 100?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Because of the given range, the lowest score attained was 55. Therefore the sum of three scores must be greater than or equal to 55 times 3 = 165 which is larger than 100. There are no combinations of three scores that would total less than 100, hence:
\ =\ \frac{0}{\left(14\cr\ 3\right)}\ =\ 0)
John
My calculator said it, I believe it, that settles it
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