Question

You have a bag of 12 marbles, 5 red, 3 green, 2 yellow & 2 orange. What is the P( red, then orange) WITHOUT replacing the first marble? Write your answer as a DECIMAL rounded to the nearest hundredth.

Answer 1

Total number of marbles = 12

P (1 red & 1 orange) =

`(1 + 1)/(12) \\ = (2)/(12) \\ = (1)/(6) \\ = 0.16`

Answer 2

Answer:solution given:

total no of marbles [S]=12

total no of red marbles[R]=5

total no of green marbles[G]=3

total no of yellow marbles[Y]=2

total no of orange marbles[O]=2

now

the P( red, then orange) n[p]=?

we have

n[p]=
`(n[R]+n[O])/(n[S])`

n[p]=
`(5+2)/(12)`

n[p]=
`(7)/(12)`

the P( red, then orange) n[p]=
`(7)/(12)`