Question

A bag contains 5 white balls, 7 red balls and 4 black ball.A ball is drawn at random from the bag. find the probability of the drawn ball is
(a) white ball
(b) Non red
please answer fast I will mark you as brainleist​

Answer 1

Step-by-step explanation:

Since, total no. of balls = 5+7+4+2 = 18

(i) No. of balls that are white or blue = 5+2 = 7

∴ Required probability =

18

7

(ii) No. of balls that are red or black = 7+4 = 11

∴ Required probability =

18

11

(iii) No. of balls that are not white = 7+4+2 = 13

∴ Required probability =

18

13

(iv) No. of balls that are neither white nor black = 7+2 = 9

∴ Required probability =

18

9

=

2

1