SOLUTION: A bag contains 7 red balls numbered {2, 4, 5, 6, 7, 8, 10} and 3 white balls numbered {1, 3, 9}. If a ball is drawn, what is the probability the ball is white or even-numbered.

Algebra ->  Probability-and-statistics -> SOLUTION: A bag contains 7 red balls numbered {2, 4, 5, 6, 7, 8, 10} and 3 white balls numbered {1, 3, 9}. If a ball is drawn, what is the probability the ball is white or even-numbered.       Log On


   

Question 960454: A bag contains 7 red balls numbered {2, 4, 5, 6, 7, 8, 10} and 3 white balls numbered {1, 3, 9}. If a ball is drawn, what is the probability the ball is white or even-numbered.


Struggling alot with probability , thanks for the help.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
There are 10 balls in the bag.
3 balls are white.
5 balls are even.
No white balls are even.
The probabilities add.
P%28W%29=3%2F10
P%28even%29=5%2F10
P%28W_or_even%29=3%2F10%2B5%2F10
P%28W_or_even%29=8%2F10=4%2F5