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A lady had fine gloves and hats. 25 blue, 7 red and 9 gey. She had to select a pair among them. But there was no light so she had to select in darkness the correct pair with a glove and a hat. Therefore how many combinations of same color she can select?
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- If the question was to select at-least 1 pair of each color.
Assume that in the first 2 picks she got pair of blue, in the next 2 picks she got pair of red,in the next 2,pair of gray.So in total 6 picks she got all the 3 pairs. But she is in darkness and is not sure what she picked is enough.So to be 100% sure, she considers herself as she picks all blue first(worst case).Then all the gray. So in the next 2 picks she is sure that she got atleast pair of red. So a total of 25+9+2=36 picks [ans]. - 14 years agoHelpfull: Yes(35) No(6)
- again the same process :
25+9+2=36 - 14 years agoHelpfull: Yes(3) No(4)
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