Book Maths Puzzle

A box contains 12 different black balls, 7 different red balls and 6 different blue balls. In how many ways can the balls be selected?

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Book Other Question

A box contains 12 black balls, 7 red balls and 6 blue balls. In how many ways can one or more balls be selected? There are 12 copies of Mathematics, 7 copies of Engineering, 3 different books on Medicine and 2 different books on Economics. Find the number of ways in which one or more than one book can be selected?