SOLUTION: A number is selected at random from the numbers 3,5,5,7,7,7,9,9,9,9 the probability that the selected number is their average is

Question 823285: A number is selected at random from the numbers 3,5,5,7,7,7,9,9,9,9 the probability that the selected number is their average is

Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

3+5+5+7+7+7+9+9+9+9 = 70

Their average is 70�10 = 7

There are 3 ways to succeed by picking a seven out 
of 10 ways to pick a number.  So the probability is
.

Edwin

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