Question

there are 5 red 6 black and 7 white balls in a bag A ball is drawn at random from the bag find the probability that it may be number 1) a red ball number 2) not a white ball

Answer 1

Answer:1) 5/18

2)11/18

Step-by-step explanation:

Answer 2

Given,

• Number of red balls = 5
• Number of black balls = 6
• Number of white balls = 7

To find,

We have to find the probability of getting

• a red ball number
• not a white ball

Solution,

The probability that a ball is drawn at random from the bag is a red ball is 5/18 and not a white ball is 11/18.

Total number of balls = 18

Number of red balls = 5

Number of black balls = 6

Number of white balls = 7

Probability = favorable cases / Total number of cases

P( of getting a red ball number) = number of red balls / Total number of balls

P( of getting a red ball number) =   5/18  

P( not a white ball) = P( red ball) + P(black ball)

                              = 5/18 + 6/18

P( not a white ball) = 11/18

Hence, the probability that a ball is drawn at random from the bag is a red ball is 5/18 and not a white ball is 11/18.