Question

A bag contains 5 black, 7 red and 3 white balls. A red ball is drawn from the bag at random. The probability that the drawn ball is not red is :

Answer 1

Step-by-step explanation:

Answer:

Total no of balls is 3+5+7=15

Favorable cases (not black) =10(3+7)

P(not black) = favourable outcomes /total no of outcomes

So here P(not black) =10/15=2/3

Therefore the probability that the ball drawn is not black is 2/3

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Answer 2

Answer:

1/5

Step-by-step explanation:

P(E)= no.of favourable outcomes/total outcomes

= 3/15= 1/5