Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals.

Seven white balls and three black balls are randomly placed in a row.

1.	Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals.
A.	\[\frac{1}{2}\]
B.	\[\frac{7}{15}\]
C.	\[\frac{2}{15}\]
D.	\[\frac{1}{3}\]
Answer» C. \[\frac{2}{15}\]

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Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals.

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