1. 10C6
2. -10C6
3. -10C5
4. 10C5
10C5
1. 252
2. 255
3. -255
4. -252
-252
1. -15C72837x
2. 15C72837x
3. -15C62837x
4. 15C62837x
15C62837x
1.
2. (2n)!/n!
3. (3n)!/(n!)2
4.
1.
2.
3.
4.
1.
2.
3.
4.
1. 6nC3n(-x)3n
2. 2nCn(-x)3n
3. 5nC2n(-x)3n
4. 4nC3n(-x)3n
6nC3n(-x)3n
1. (3x)n+1
2. (2x)n+1
3. (2x)n
4. (3x)n
(2x)n
1. 10!/5!6!
2. 10!/(5!)2
3. 10!/5!7!
4. none
10!/(5!)2
1. (2n+1)n!/n!(n+1)!
2. 2n!/n!(n+1)!
3. n!/2n!(n+1)!
4. none
(2n+1)n!/n!(n+1)!