iven the probability mass function of a random variable X p(x) = c/(x+1) if x = 0,1 and p(x) = 0 in other mass points. What is the value of c ?

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Given the probability mass function of a random variable X

p(x) = c/(x+1) if  x = 0,1   and p(x) = 0 in other mass points. 

What is the value of c ?


 
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