SOLUTION: Two real numbers are selected independently from a hat containing the numbers from -20 to 10. What is the probability that the product of the two numbers selected is greater than z
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Question 706203: Two real numbers are selected independently from a hat containing the numbers from -20 to 10. What is the probability that the product of the two numbers selected is greater than zero? Answer by filboi(35) (Show Source):
You can put this solution on YOUR website! To get a product greater than zero, the number must be both positive or both negative numbers. There are 20 negative number, 10 positive number and the total sample space is 31 since 0 is also between -20 to 10. So the answer is:
P = (20/31)(19/30) + (10/31)(9/30) = 47/93
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