Find co-efficient of is the expansion of
126
63
84
None of these
As.learnt in concept
General Term in the expansion of (x+a)^n -
- wherein
Where
General term =
Here r=4
Thus we get,
Option 1)
126
Incorrect option
Option 2)
63
Correct option
Option 3)
84
Incorrect option
Option 4)
None of these
Incorrect option