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Suppose X is a random variable which tak...

Suppose X is a random variable which takes values 0,1,2,3,.... and `P(X=r)=pq^(r)`, where `0ltplt1,q=1-p` and r=0,1,2,...... then :

A

`P(Xgea)=q^(a)`

B

`P(Xgea+b|Xgea)=P(Xgeb)`

C

`P(X=a+b|Xgea)=P(X=b)`

D

All of the above

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The correct Answer is:
D
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