Saved Bookmarks
| 1. |
If the number a b c d re form an AP then find the value of a-4b+6c-4d+e= ? |
|
Answer» Answer: 0 Step-by-step explanation: The AP is : a b c d e Let the FIRST TERM be of the form A ; and the difference is D . Then Let the AP be in the form :- A-2D (a) A-D(b) A(c) A+D(d) A+2D(e) Now using these terms in the value a-4b+6c-4d+e =A-2D-4(A-D)+6(A)-4(A+D)+(A+2D) After EXPANDING , we get =A-4A+6A-4A+A =2A-8A+6A =8A-8A =0 |
|