InterviewSolution
Saved Bookmarks
| 1. |
The coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)2n are in A.P., show that 2n2−9n+7=0. |
|
Answer» The coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)2n are in A.P., show that 2n2−9n+7=0. |
|