SOLUTION: A bag has ten marbles in it. Three of them are green, one of them is red, five of them are yellow, and one of them is blue. If one marble is taken out of the bag randomly, what is

Algebra ->  Probability-and-statistics -> SOLUTION: A bag has ten marbles in it. Three of them are green, one of them is red, five of them are yellow, and one of them is blue. If one marble is taken out of the bag randomly, what is       Log On


   

Question 622343: A bag has ten marbles in it. Three of them are green, one of them is red, five of them are yellow, and one of them is blue. If one marble is taken out of the bag randomly, what is the probability that it will either be green or red?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

 10 marbles: 3 green, 1 red, 5 yellow and 1 blue

If one marble is taken out of the bag randomly

P(green 'or' red) = P(green) + P(red) = 3%2F10+%2B+1%2F10+=+4%2F10+=+2%2F5