Question

I don’t know how to solve this problem

Answer 1

The draws are independent, so

`P(\text{red then blue})=P(\text{red})\cdot P(\text{blue})`

There is a total of 11 marbles in the bag, so

`P(\text{red})=\frac3{11}`

and

`P(\text{blue})=\frac5{11}`

So

`P(\text{red then blue})=(15)/(121)`