need help with probability (1 Viewer)

[koizora]

pro

 

[oly1991]

1.

1 - (12/15 x 11/14 x 10/13)
= 47/91

2.

a) 13/52 x 12/51 = 1/17

b) 13/52 x 13/51 = 13/204

c) 13/52 x 39/51 = 13/68

im pretty sure that they are all right although someone can correct me if im wrong