Question

a box has 10 black and 10 white balls what is the probability of getting two balls of the same colour ?

plzzz give me full solution

Answer 1

Balls of black color= 10
Balls of white color= 10

Probability= No. Of desired outcomes/ total outcomes
= 2/20= 1/10 is the probability...

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Answer 2

answer will be 2 / 20 bcoz for getting same colors it must be 2 black or 2 white so probability will be 2/20