Question

​​​​A bag has 10 red marbles, 6 blue marbles and 4 white marbles. A marble is drawn from the bag without looking into the bag.
a) What is the probability of getting a blue marble?
b) What is the probability of getting a non-red marble?

Answer 1

Dear student,

$$\begin{gathered} Totalnumberofpossibleoutcomes=10+6+4=20 \\ a)Possiblityofgettingabluemarble=6 \\ Probability=\frac{No.offavourableoutcomes}{Totalnumberofpossibleoutcomes}=\frac{6}{20}=\frac{3}{10} \\ b)Possiblityofgettinganonredmarble=6+4=10 \\ Probability=\frac{No.offavourableoutcomes}{Totalnumberofpossibleoutcomes}=\frac{10}{20}=\frac{1}{2} \end{gathered}$$

Regards