Question

A box contains 20 balls: 10 are yellow, 6 are red, and 4 are grey. What is the probability of picking a yellow and then a red ball? (the first ball will be replaced)​

Answer 1

probability of picking a yellow ball: 10/20 (1/2)

probability of picking a red ball: 6/20 (3/10)

1/2 times 3/10 =

3/20