Math, asked by jaskaran8179, 1 month ago

A bag contains 20 balls, some are red and others are black. If a ball is drawn at random from the bag, the probability that it is red is 2/5. Find the number of black ball in the bag

Answers

Answered by namitamary2007

1

Answer:

12 black balls

Step-by-step explanation:

probability of black ball=1-probability of red ball

P(B)=1-2/5=3/5

No of black balls=3/5*20

=12

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