Question

there are 9 marbles 6 purple 3 orange without waiting back the first Marble, you select the second more black random, what is p orange orange?​

Answer 1

`(1)/(51)`

Explanation:

there are 9+6+3=18 in total

p=
`(3)/(18)`×
`(2)/(17)`=
`(1)/(51)`