A bag contains 64 balls of 8 diff colors. There are eight of each color (including red).what is the least number u have to pick, without looking, to be sure of selecting 3 red balls?

Least no. Of ball need to be pick to become sure picking three red balls=59
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59, because one cat atmost pick all other(other than red) balls along with the minimum required 3 red balls. which is equal to (64-8)+3(i.e. 59).
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64 balls of 8 balls each color
so there r 8 colors
first 7 colored of (!RED) balls can be picked up=56 balls
then we need to pick 3 balls which r obviously red=3 balls
total 59 balls
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8c3/64c3 answer
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