Question

If a marble is randomly chosen from a bag thay contains exactly 8 red marbles, 6 blue marbles, and 6 white marbles, what is the probability that the marble will not be white?

Answer 1

Answer: 7/10

Explanation:

The probability of an event can be calculated as:

`P(E)=(n(F))/(n(T))`

Where n(F) is favorable outcomes and n(T) is total possible outcomes.

The total number of marbles can be obtained as,

8 + 6 + 6 = 20

The probability of marble being white can be calculated as,

`P(W)=\underline{(6)/(20)}`

Now, the probability of the marble not being white can be evaluated as,

`\begin{aligned}P^(\prime)(W) &=1-(6)/(20) \\&=(20-6)/(20) \\&=(14)/(20) \\&=(7)/(10)\end{aligned}`

Therefore, the probability of the marble not being white is 7/10