The random variable X has a probability distribution P(X) of the following form,
where k is some number. Determine the value of k
P(x)={k, if x=0
`" "`2k, if x=1
`" "`3k if x=2
`" "`0, otherwise}

Explanation

`sumP(x)=1`
`rArr k+2k+3k+0=1 rArr k=1/6`