A) \[\frac{14}{29}\]
B) \[\frac{20}{39}\]
C) \[\frac{1}{2}\]
D) None of these
Correct Answer: B
Solution :
Required probability \[=\frac{{}^{20}{{C}_{1}}\times {}^{20}{{C}_{1}}}{{}^{40}{{C}_{2}}}=\frac{20\times 20\times 2}{40\times 39}=\frac{20}{39}.\]
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