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Grade: 12
        
A bag contains 10 balls, out of which 2 are white, 5 are red and 3 are black balls. If three are drawn at random, then the probability that two balls are of same colour is
5 months ago

Answers : (2)

Arun
24495 Points
							
Dear student
 
ways of drawing three balls out of which 2 balls are same = 
 = 2c2 *8c1 + 5c2 * 5c1 + 3c2 * 7c1 = 8 + 50 + 21 = 79
 
hence probability = 79/10c3 = 79 / 120
5 months ago
Vikas TU
11138 Points
							
Dear student 
Please follow this link for generalisd solution of such prblems 
Good Luck 
Cheers 
5 months ago
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