AP and TS EAMCET Engineering Model Paper 15

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Question : 57 of 160

Marks: +1, -0

A random variable x has its range {0,1,2,3.....} If P(x=r)=

c(r+1)

3r

for r = 0,1,2,..... then c =

2
1
2
4
9
1
4

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