A bags contain 4 red , 3 black , 2 white ball in how many 3 balls can be drawn from the bag so that they include atlest one black ball
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The bag contains 2 White, 3 Black and 4 Red balls. So, total 9 balls are there in the bag; among them 3 are Black and 6 are non-Black balls. Three balls can randomly be drawn in (9C3) = 84 ways. 1 Black and 2 non-Black balls can be drawn in (3C1)*(6C2) = 45 ways.
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