A box has 45 chocolates of different colors 20 red, 15 white and 10 black chocolates. If a chocolate is chosen at random, what is the probability of that being white chocolate?

a) 1/2 b) 1/3 c) 2/3 d) 3/4

• 20red+15white+10black=45
  probability of getting white is 15/45 = 1/3
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• n(A)=15C1; n(S)=45C1;
  =15C1/45C1=15/45
  =1/3
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• 15C1/45C1=1/3
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• My answer is 3. I got the answer by dividing 15 by 45. 15 is the probability of choosing white. 45 is the probability of choosing one among 45.
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• 15/45=1/3
  ANS=1/3
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• 15C1/45C1=1/3
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• ans=probability of selecting white chocolate is=15/45=1/3
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• 15/45=1/3
  
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• no of white chocolates=15
  total choc=45
  so ans is 15/45=1/3
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• P(w) =white ball/total ball,
  P(w) =15/45
  = 1/3
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• There are total 45 chocolates in a box.
  20 RED, 15 WHITE, 10 BLACK. So , We need to choose a white one. It can be selected only from 15 white chocolate .So, 15C1(no of chocos C 1 ->i.e we need only one choco). From 45 chocolates we need to choose any one randomly so again 45C1 PROBABILITY IS =15C1/45C1=1/3
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• prob of that being white chocolate=15/45=1/3
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