A class consists of 80 students, 25 are girls 55 are boys, 10 are rich remaining poor, 20 of them are fair complexioned. If we consider selecting girls and selecting rich, selecting fair complexioned, are all these events are independent?

Is probability of selecting fair complexioned rich girls is simply multiplying the probabilities

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Solution

No they are not independant events as someone can be both girl and fair complexioned together. Thus they are not independant events.

No, they are not simply multiplying the probablities, instead the intersection of all the .three must be found. This is the application of conditional probability. If you upload the exact question, i can provide the answer step by step. Cheers. Hope you understood.

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