A) 140
B) 196
C) 280
D) 346
E) 265
Correct Answer: B
Solution :
Total number of ways \[{{=}^{5}}{{C}_{4}}{{\times }^{8}}{{C}_{6}}{{+}^{5}}{{C}_{5}}{{\times }^{8}}{{C}_{5}}\] \[=\frac{5!}{4!\times 1!}\times \frac{8!}{2!\times 6!}+\frac{8!}{5!\times 3!}\] \[=\frac{5\times 8\times 7}{2}+\frac{8\times 7\times 6}{6}\] \[=140+156=196\]You need to login to perform this action.
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