Question

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

Answer 1

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:

2/3

Step-by-step explanation:

Total no. of balls =15

P(not black) =(3+7)/15

=10/15

=2/3