Saved Bookmarks
| 1. |
Let a1,a2,a3,⋯ be an arithmetic progression with npn-zero common difference. It is given that 12∑i=4ai=63 and ak=7 for some k. Then the value of k is |
|
Answer» Let a1,a2,a3,⋯ be an arithmetic progression with npn-zero common difference. It is given that 12∑i=4ai=63 and ak=7 for some k. Then the value of k is |
|