an urn contains 7 white , 5 black and 3 red balls . two balls are drawn at rendom. find the probability that
1 both the balls are red
2. one ball is red and the other black
3. one ball is white
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1) 2÷15
2)2÷15
3)1÷15
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2)2÷15
3)1÷15
Hope you are helped by me
mark me brainliest
Answered by
2
Answer:P(1 red&1 black)=(7C1x8C1)/15C2
=>(7x8)/105
=>8/15
P(1 black)=(7C1x8C1)/15C2
=>(7x8)/105
=>8/15
Step-by-step explanation:
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