SOLUTION: you put 9 paper slips numbered 1 through 9 in a hat.you randomly choose a slip from the hat.without replacing the first slip, you randomly choose a second slip. what is the probabi

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Question 713454: you put 9 paper slips numbered 1 through 9 in a hat.you randomly choose a slip from the hat.without replacing the first slip, you randomly choose a second slip. what is the probability that the sum of the two numbers is greater than 12?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
you put 9 paper slips numbered 1 through 9 in a hat.you randomly choose a slip from the hat.without replacing the first slip, you randomly choose a second slip. what is the probability that the sum of the two numbers is greater than 12?
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Sketch a 9 by 9 square.
Number the rows 1 to 9
Number the columns 1 to 9
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Enter the sums that are greater than 12.
Count the number of such sums
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P(sum > 12) = (that number)/81
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Cheers,
Stan H.
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