Question

A bag contains 4 red balls,5white balls and 7 black balls find the probability of getting a white balls
(a) 5
(b) 5/16
(c) 5/15
(d) 11​

Answer 1

Answer:

Since, total no. of balls = 7+5+3 = 15

(i) No. of balls that are red or white = 7+5 = 12

∴ Required probability =

15

12

=

5

4

(ii) No. of balls that are not black = 7+5 = 12

∴ Required probability =

15

12

=

5

4

(iii) No. of balls that are neither white nor black = 7

∴ Required probability =

15

7

Step-by-step explanation:

Hope it will help you

Answer 2

ANSWER

Since, total no. of balls = 7+5+3 = 15

(i) No. of balls that are red or white = 7+5 = 12

∴ Required probability = 12/15 = 4/5

(ii) No. of balls that are not black = 7+5 = 12

∴ Required probability = 12/15 = 4/5

(iii) No. of balls that are neither white nor black = 7

∴ Required probability = 7/15