Saved Bookmarks
| 1. |
In the expansion of (1+x)n the coefficient of pth and (p+1)th terms are respectively p and q. The p + q = |
|
Answer» option b is the correct answer........ first find general tern of (1+x)n Tr+1 = nCr xr Tp= T(p-1)+1 = nCp-1 xp-1 Cofficient of pth term = P nCp-1 = P Tp+1= T(p)+1 = nCp xp Cofficient of (P+1)th term = q nCp= q P+q = nCp-1 + nCp =n+1Cp |
|