If the range of a random variable X is \{0,1,2,3,4, . . . . . .\} with P(X=k)=\frac{(k+1) a}{3^k} for k \geq 0, then a is equal to

EAMCET Engineering 2005 Solved Paper

Section: Mathematics

Question : 123 of 160

Marks: +1, -0

If the range of a random variable X is {0,1,2,3,4,......} with P(X=k)=‌

(k+1)a

for k≥0, then a is equal to

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