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There are 5 distinct pairs of white socks and 5 pairs of black socks in a cupboard. In the dark, how many socks do I have to pull out to ensure that I have at least 1 correct pair of white socks?
a) 3
b) 11
c) 12
d) 16

it need to be 11.cos thr s totally 20 such socks,10 in each color so if we take 11 thr shud be atleat 1pair of same color

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What is the answer for that : A, B and C are 8 bit nos. They are as follows: A -> 1 1 0 0 0 1 0 1 B -> 0 0 1 1 0 0 1 1 C -> 0 0 1 1 1 0 1 0 ( - =minus, u=union) Find ((A - C) u B) =?	If G(0) = -1 G(1)= 1 and G(N)=G(N-1) - G(N-2) then what is the value of G(6)?