Question

18. There are 5 white, 7 red, 4 black and 2 blue
identical balls in a box. One ball is selected
at random from the box. Find the probability
that the selected ball is ( 1 ) either white or
blue ( 2 ) eher red or black (3) not white
(4 ; neither white, nor black.​

Answer 1

Answer:

1.7/18

Step-by-step explanation:

2.11/18. 3.13/18. 4.1/2

Answer 2

Answer:

(a) 7/18

Step-by-step explanation:

(b) 11/18

(c) 13/18

(d) 1/2