Question
Download Solution PDFA bag contains 5 white, 4 black and 6 red balls. If 2 balls are drawn one by one without replacement, find the probability of getting all white balls.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- The number of ways for selecting r from a group of n (n > r) = nCr
-
The probability of any event to occur =
Calculation:
Total number of balls = 5 + 4 + 6 = 15
Total number of white balls = 5
Selection of 2 balls out of 15 = 15C2
Selection of 2 white balls out of 5 = 5C2
So the required probability (P) =
P =
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