Question

Sheldon spins the two spinners below one time what are the chance he will spin 3 or c ?

Answer 1

`P(3\ or\ c) = 0.45`

Explanation:

Given

See attachment for spinner

Required

`P(3\ or\ c)`

From the first spinner, we have:

`S = \{1,2,3,4,5\}` --- Sample Space

`n(S)=5`

So, P(3) is:

`P(3) = (n(3))/(n(S))`

`P(3) = (1)/(5)`

`P(3) = 0.20`

From the second spinner, we have:

`S = \{a,b,c,d\}`

`n(S) = 4`

So, P(c) is:

`P(c) = (n(c))/(n(S))`

`P(c) = (1)/(4)`

`P(c) = 0.25`

The required probability is then calculated as:

`P(3\ or\ c) = P(3) + P(c)`

`P(3\ or\ c) = 0.20 + 0.25`

`P(3\ or\ c) = 0.45`