Tim has 30 jellybeans, with equal numbers of three flavors—raspberry, pineapple, and orange. He likes raspberry the best. So far, Tim has eaten 6 orange and 4 pineapple jellybeans. What are the chances that the next one he picks will be raspberry?

Question

Vocaloid · Answer

you start off w/ 10 raspberry 10 pineapple and 10 orange

take away 6 orange and 4 pineapple gives us
10 raspberry, 6 pineapple, 4 orange

so if there are 10 raspberries out of (10+6+4) total beans what's the probability of getting  raspberry?