Question

A bag contains 3 white, 4 red and 7 black balls. a ball is drawn at random. Find the probability that a) it is a black ball b) it is a red or a black ball c) not a red ball​

Answer 1

Answer:

Step-by-step explanation:

a)

1/2

b)

11/14

C)

10/14

Answer 2

Answer:  Step-by-step explanation: The total number of outcomes = 14 White balls=3 , red balls= 4 , Nd black balls =7 ,  (i)     Probability ( black ball )= favourable number of elementary events / total no. Of                                                          events  = 7/14 = 1/2 (ii) red or black = 4 + 7 = 11  = 11/14  (iii) not red = 14 - 4 = 10  = 10/14 = 5/7 Hope this might help you :))  Good luck