A) \[12/35\]
B) \[6/35\]
C) \[4/35\]
D) none of these
Correct Answer: A
Solution :
Total number of balls\[=15\] \[\therefore \]Required probability\[=\frac{^{9}{{C}_{2}}}{^{15}{{C}_{2}}}=\frac{9\times 8}{15\times 14}\] \[=\frac{12}{35}\]
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