Q13 of 26 Page 8

Find the 7th term from the end in expansion of

Given


Let us Assume Tr + 1 be the 7th term from the end.


Then, Tr + 1 is (9 - 7 + 1)th , i.e., 3rd term from the beginning.


Since,T3 = T2 + 1


T2 + 1 = 8C2.


T2 + 1


T2 + 1 = 4032x10


Hence, the 7th term from the end is 4032x10.


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