A student is to answer 10 out of 13 questions in an examination such that he must choose atleast 4 from the first 5 questions. The number of choices available to him is
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
196
b
280
c
346
d
140
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
The number of choices available to him is =5c4.8c6+5c5.8c5 =196