out of 15 items 4 are not good in condition 4 selected at random.Find the probability that (1) All are not good .
(2) Two are not good.
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Answered by
3
Answer:
(1) All are not good because there are 15 items 8 are not good and 7 are not good because I m not sure for these answer
Answered by
8
Answer:
1. 4c4/15c4=1/1305
2.(4c2+11c2)/15c4=61/1365
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