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A six-faced unbiased die is thrown twice...

A six-faced unbiased die is thrown twice and the sum of the numbers appearing on the upper face is observed to be 7 . The probability that the number 3 has appeared at least once , is

A

43835

B

`1/2`

C

`1/3`

D

`1/4`

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Verified by Experts

The correct Answer is:
C
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