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Maths Puzzle
Out of 3 mathematics books, 4 science books, and 5 literature books (all are different), how many different collections can be made by taking atleast one of each kind?
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self Other Question
A box contains 3 different White balls, 4 different Blue balls, 5 similar Green balls. In how many ways can 3 balls be drawn the box so that at least 1 blue ball is always included in the draw?
In how many ways can a pack of cards be equally divided among two players?