A locker can be opened by dialing a fixed three digit code (between 000 and 999). A stranger who does not know the code tries to open the locker by dialing three digits at random. The probability that the stranger succeeds at the \[{{k}^{th}}\]trial is

A locker can be opened by dialing a fixed three digit code (between 00

1.	A locker can be opened by dialing a fixed three digit code (between 000 and 999). A stranger who does not know the code tries to open the locker by dialing three digits at random. The probability that the stranger succeeds at the \[{{k}^{th}}\]trial is
A.	\[\frac{k}{999}\]
B.	\[\frac{k}{1000}\]
C.	\[\frac{k-1}{1000}\]
D.	None of these
Answer» C. \[\frac{k-1}{1000}\]

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A locker can be opened by dialing a fixed three digit code (between 000 and 999). A stranger who does not know the code tries to open the locker by dialing three digits at random. The probability that the stranger succeeds at the \[{{k}^{th}}\]trial is

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