Question

cable contains 3 red balls and 5 black balls A ball is selected at random from the bag what is the probability that the ball selected is that (¡)red(¡¡)not red​

Answer 1

(i) total no. of possible outcomes outcomes = 3+5=8

favourable outcomes =3

probability = favourable outcomes / total no. of possible outcomes

probability =3/8

(ii) total No. of possible outcomes = 3+5=8

favourable outcomes =5

probability = favourable outcomes /total no. of possible outcomes

probability =5/8

Answer 2

Total no of ball(n) =8

Total no of red balls=3

Total no of blue balls=5

Therefore....

i) red

P(r) /P(n) =3/8

ii) not red

P(b) /P(n) =5/8

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