A) \[\frac{^{20}{{C}_{2}}{{\times }^{30}}{{C}_{2}}}{^{50}{{C}_{5}}}\]
B) \[\frac{^{30}{{C}_{2}}{{\times }^{19}}{{C}_{2}}}{^{50}{{C}_{5}}}\]
C) \[\frac{^{19}{{C}_{2}}{{\times }^{31}}{{C}_{2}}}{^{50}{{C}_{5}}}\]
D) None of these
Correct Answer: B
Solution :
[b] \[n(S){{=}^{50}}{{C}_{5}},n(E){{=}^{30}}{{C}_{2}}{{\times }^{19}}{{C}_{2}}\] \[\therefore P(E)=\frac{^{30}{{C}_{2}}{{\times }^{19}}{{C}_{2}}}{^{50}{{C}_{5}}}.\]You need to login to perform this action.
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