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
C7 13x923y2,C7 133x2y92
b
C7 13x923y2,C6 133x2y 92
c
C6 13x123y2,C7 13
d
None
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
General term Tr+1=Cr nan-rbr in the expansion of (a+b)nHere n = 13 (odd) Middle term =13+12,13+32 =7, 8T7=T6+1 =C6 13x32y313−63xy326T8=T7+1 =C7 13x32y313−73xy327 =C7 133x2y92