November 29, 2015

Homework Help: Math

Posted by Jack on Friday, January 11, 2013 at 6:51pm.

I am stuck on several probability questions.

A spinner that has 15 equal sized sections numbered 1 to 15 is spun twice. What is the probability the spinner lands on an odd number and then on an even number? A. 56/225 B. 169/225 C. 1/15 D. 21/225 I chose A. 56/225 because 8/15 x 7/15 = 56/225.

Is this correct?

A bag contains 9 metal balls, 10 hollow balls, 4 glass balls and 18 plastic balls. What is the probability of choosing a glass or hollow ball? A. 24.6% B. 38.9% C. 35.4% D. 34.1%
What is the probability of receiving a 6 or a 9 from a deck of 52 cards and an ace or a King? A. 1.7% B. 15% C. 2.4% D. 5.6%

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