1. 0
2. nC(n/2)(-1)n/2
3. 2nCn(-1)n
4. (2n+1)Cn(-1)n
nC(n/2)(-1)n/2
1. -1
2. 1
3. 2
4. -2
1
1. parallelogram
2. rectangle
3. square
4. rhombus
rhombus
1. (-1)n 2nCn
2. (-1)n (2n+1)Cn
3. (-1)(n-1) 2nCn
4. (-1)(n-1) 2nCn+1
(-1)n 2nCn
1. 1+1/2+1/3+....1/n
2. 1+1/2-1/3+....1/n
3. 1+2/3+3/4+....n/n+1
4. none
1+1/2+1/3+....1/n
1. 0
2. 2n
3. 2n+1-1/n+1
4. none
0
1. (m+n)Cr
2. (mn)Cr
3. (m+n)Cr+1
4. (m+n)Cr-1
(m+n)Cr
1. 2n-1
2. 2n/2 sin
3. 2n/2 cos
4. 0
2n/2 sin
1. 1
2. n
3. nx
4. ny
n
1. nxy
2. nx(x+yn)
3. nx(nx+y)
4. none
nx(nx+y)