Question

A box has 4 red balls and 12 black balls. Find the probability that the selected ball is

(i) a red ball (ii)a black ball, chosen at random from the box. Also, prove that sum of these two probabilities is 1?


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Answer 1

Here is your answer....

1)P(red ball)=1/4

2)P(black ball)=3/4

1/4+3/4=4/4=1

pls refer my attachment:

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Answer 2

Step-by-step explanation:

I have attached an attachment here

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