SOLUTION: A number is selected from 3, 6, 9, 12, 15, 18, 21. Find the probability that the number selected is less than 10, given that the number was odd. Show your work.

Question 1139226: A number is selected from 3, 6, 9, 12, 15, 18, 21. Find the probability that the
number selected is less than 10, given that the number was odd. Show your work.
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Given that the number was odd (3,9,15,21), the probability it is <10 is (3,9)
So this is a probability of 1/2 or 0.5
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.

Of these 7 numbers, 4 numbers are odd; of these four, only 2 are less than 10. Therefore, the probability under the question is = .

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