Question

A jar contains 11 green 22 red and 12 navy marbles a marble was drawn at random p(red or green)

Answer 1

The total number of marbles

`11+22+12=45\text{ marbles}`

Probability is

`Probability=\frac{Possible\text{ outcome}}{Total\text{ sample space}}`

Probability of red

`(22)/(45)`

Probability of green

`(11)/(45)`

Finally

P(red or green)

`\begin{gathered} =(22)/(45)+(11)/(45) \\ \\ =(33)/(45) \end{gathered}`