- Books Name
- CBSE Class 7 Mathematics Book
- Param Publication
- CBSE Class 7
A bag contains 5 red balls, 8 white balls, 4 green balls and 7 black balls. If one ball is drawn at random, find the probability that it is :
(i) Black (ii) Not red (iii) Green
Number of red balls in the bag = 5
Number of white balls in the bag = 8
Number of green balls in the bag = 4
Number of black balls in the bag = 7
∴ Total number of balls in the bag = 5 + 8 + 4 + 7 = 24.
Drawing balls randomly are equally likely outcomes.
∴ Total number of possible outcomes = 24
(i) There are 7 black balls, hence the number of such favourable outcomes = 7