Question

4. There are 6 red, 5 white, 3 blue, and 4 green marbles in a bag. What is the probability of selecting a red marble, given that a blue marble was already selected?5. While playing Blackjack, an Ace is dealt. To get Blackjack, or 21, a card worth 10 is needed. This could be a 10, Jack, Queen, or King. What is the probability of not getting Blackjack?

Answer 1

`\begin{gathered} There\text{ are 6 red, 5 white, 3 blue, and 4 gr}en\text{ marble}. \\ A\text{ }b\text{lue marble was already selected, } \\ So,\text{ remaning marble in the bag is,} \\ \text{6 red, 5 white, 2 blue, and 4 gr}en\text{ marble}. \\ So,\text{ the proability of selecting one red marble is,} \\ \Rightarrow(6_(C1))/(17_(C1))=(6)/(17)=0.3529 \end{gathered}`