Playing with Combinatorics

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Problem Statement John likes playing with combinatorics. One day he comes across a strange formula. He defines a sum as : Help John to find the value of this sum, for a given value of N. Since, the sum can be large, print its value modulo 109 Note : "nCk" is the number of combinations of k elements in n elements. Input The first line of the input contains an integer T denoting the number of t

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solution.cppC++17

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