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Two numbers are chosen at random from the set {2, 3, 5, 7, 11, 13, 17, 19, 23, 29}.  What is the probability that their sum is 24?

 May 10, 2020
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I will take a crack at this one:

 

Since you have 10 numbers and if you made an addition table of 10 x 10 = 100 sums.

 

I count 6 sums totaling 24. Therefore, the probability is = 6 / 100 =3 / 50

 May 10, 2020

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