Suppose that X takes on one of the value...

Suppose that X takes on one of the values 0, 1, and 2. If for some constant k, P(X=i)=k P(X=i-1)i=1,2 and P(X=0)=`1/7` then the value of k is

A

1

B

2

C

3

D

4

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The correct Answer is:

B

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