Math genius

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Gaurav is playing a game of math.His friend Deep who lives next door joins him in this game.They are given a sequence of n numbers and they have to find out all the sets of k numbers such that their g.c.d is 1. More specifically, for a given value of k, you need to find the number of groups, each having k numbers, such that the gcd of all elements in that group is 1. Two groups are said to be di

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solution.cppC++17

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