A) \[140\]
B) \[196\]
C) \[280\]
D) \[346\]
Correct Answer: B
Solution :
As for given question, two cases are possible. (i) Selecting 4 out of first 5 questions and 6 out of remaining 8 questions \[{{=}^{5}}{{C}_{4}}{{\times }^{8}}{{C}_{6}}=140\]choices (ii) Selecting 5 out of first 5 questions and 5 out of remaining 8 questions \[{{=}^{5}}{{C}_{5}}{{\times }^{8}}{{C}_{5}}=56\]choices \[\therefore \]Total number of choices\[=140+56=196\]
You need to login to perform this action.
You will be redirected in
3 sec
