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A number lock contains 4 rings each ring...

A number lock contains 4 rings each ring containing 6 numbers . All the possible attempts of opening the lock are made but the lock opens in only one way. The probability for the lock to open is

A

`(4)/(6!)`

B

`(4!)/(6!)`

C

`(1)/(6^(4))`

D

`(4)/(6^(4))`

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The correct Answer is:
C
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