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Permutation and Combination
It is dark in my bedroom and I want to get two socks of the same color from my drawer, which contains 24 red and 24 blue socks. How many socks do I have to take from the drawer to get at least two socks of the same color?
a) 2 b) 3 c) 48 d) 25
Read Solution (Total 3)
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- 3.
when I take out 2 socks, they can be of same colour or of 2 different colors.
But third sock will definitely make pair with one of earlier two socks. - 13 years agoHelpfull: Yes(29) No(4)
- The answer is 3
because in first two time it may be 2 red, 2 blue or 1 red or 1 blue.
so if it took in 3rd chance it surely get the 2 socks of same color - 9 years agoHelpfull: Yes(1) No(0)
- ans is c when you take 2 socks either may correct but if they different take 3rd it matches with either black or white
- 8 years agoHelpfull: Yes(0) No(0)
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