If I throw 3 standard 7-sided dice, what is the probability that the sum of their top faces equals to 21? Assume both throws are independent to each other.

If I throw 3 standard 7-sided dice, what is the probability that the

1.	If I throw 3 standard 7-sided dice, what is the probability that the sum of their top faces equals to 21? Assume both throws are independent to each other.
A.	\(\frac{1}{273}\)
B.	\(\frac{2}{235}\)
C.	\(\frac{1}{65}\)
D.	\(\frac{2}{9}\)
Answer» B. \(\frac{2}{235}\)

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If I throw 3 standard 7-sided dice, what is the probability that the sum of their top faces equals to 21? Assume both throws are independent to each other.

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