Question

proberly of getting a non red ball from a bag containing 4red, 5blue, and 3 black balls is​

Answer 1

3/4= 0.75 .............

Answer 2

Number of red balls = 4

Total number of outcomes = 12

P(red balls) = Favourable outcomes/Total number of outcomes

= 4/12

= 1/3

P(not E) = 1 - P(E)

P(non-red ball) = 1 - P(red ball)

= 1 - 1/3

= 2/3 Ans