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A biased die is marked with numbers 2, 4...

A biased die is marked with numbers 2, 4, 8, 16, 32, 32 on its faces and the probability of getting a face with mark n is `1/n` . If the die is thrown thrice, then the Question: probability, that the sum of the numbers obtained is 48, is :

A

`7/(2^(11))`

B

`7/(2^(12))`

C

`3/(2^(10))`

D

`13/(2^(12))`

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