InterviewSolution
Saved Bookmarks
| 1. |
The value of 15C8 + 15C9 – 15C6 – 15C7 is(a) –1 (b) 0 (c) 1 (d) None of these |
|
Answer» Answer : (b) 0 15C8 + 15C9 – 15C6 – 15C7 = 15C8 + 15C9 – 15C9 – 15C8 (∵ nCr = nCn–r) = 0 |
|