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Two different integers are randomly chosen from the set
{5, 8, 7, 4, -2}
What is the probability that their product is negative? Express your answer as a common fraction.

 Aug 26, 2021
 #1
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5 C 2 ==10 ways of selecting 2 numbers.

 

These are all possible products of the 5 numbers:

 

(-16, -14, -10, -8, 13, 20, 28, 32, 35, 56) >>Total =  10

 

 

Probability is: 4 / 10 ==2 / 5

 Aug 26, 2021

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