a random variable has probability distribution: x= 0,1,2,3,4,5,6,7 and P(x) =0,k,2k,2k,3k,k*k, 2k*k, 7k (k+1),the value of k= O a. 0 b. 4.76 C. 1 O O C. d. O no one of them

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