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A fair die is tossed eight times. The pr...

A fair die is tossed eight times. The probability that a third six is observed in eight throw is `(\ ^7C_(10)xx5^7)/(6^7)` b. `(\ ^7C_2xx5^2)/(6^8)` c. `(\ ^7C_2xx5^5)/(6^6)` d. none of these

A

`(.^(7)C_(2)xx5^(5))/(6^(7))`

B

`(.^(7)C_(2)xx5^(5))/(6^(8))`

C

`(.^(7)C_(2)xx5^(5))/(6^(6))`

D

none of these

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The correct Answer is:
B
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