Question

A box contains 16 large marbles and 18 small marbles. Each marble is either green or white. 9 of the large marbles are green, and 3 of the small marbles are white. If a marble is randomly selected from the box, what is the probability that it is small or green

Answer 1

`P(S&G) =0.7941`

Explanation:

From the question we are told that:

Sample size
`n=16+18=>34`

N0 of Large
`L=16`

N0 of Small
`S=18`

N0 large Green
`L_g=9`

N0 of small White
`S_w=3`

Therefore

Number of green marbles
`N0(G)=9+(18-3)`

Number of green marbles
`N0(G)=24`

Generally the Number of both small and green Marble is

`N0 of (S&G)= 18 - 3 = 15`

Generally the probability that it is small or green P(S&G) is mathematically given by

`P(S&G) = ((18 + 24 - 15))/((18 + 16))`

`P(S&G) =0.7941`