Question

A jar contains 8 white, 10 blue, and 18 red marbles. If one marble is drawn at random from the jar, find theprobability that:

Answer 1

To solve this problem, you can use the following formula:

`P(A)=\frac{outcome\text{ in A}}{total\text{ number of outcomes}}.`

Now, for all the problems, the total number of outcomes is:

`8+10+18=36.`

Now, there are 8 white marbles and 10 blue marbles, therefore:

`P(white\text{ or blue\rparen= }(8+10)/(36)=(18)/(36)=(1)/(2).`

Analogously:

`P(white\text{ or red\rparen=}(8+18)/(36)=(26)/(36)=(13)/(18).`
`P(blue\text{ or red\rparen=}(10+18)/(36)=(7)/(9).`

Answer:

1.-

`(1)/(2).`

2.-

`(13)/(18).`

3.-

`(7)/(9).`