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Pankaj Varma

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  1. The suggested solution assumes that their are equal number of each color slip and the each person, when he enters can see every other forehead and count the color papers glued there. We need a more innovative solution, I guess.
  2. Does not say about the shape of the cake. A properly designed Y shaped cake could be cut into 3 equal portions with just one straight cut
  3. (1+1)^((1+1)^(1+1+1)-1)+(1+1+1)^(1+1) does it in 13 ones.
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