A bag contains 7 white and 11 black balls. Two balls are drawn at random. Find the probability that both balls are either black or white?
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for white 7/18
for black 11/18
for black 11/18
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Answer:
Step-by-step explanation: total number of balls =7+11=18
Probablity of getting black ball=11/18
Probablity of getting a whiteball =7/18
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