Find the value of `.^8 C_4`

Find the value of .^10 C_4

Find the value of .^7C_4

Find the value of .^20 C_0-(.^20C_1)/2+(.^20C_2)/3-(.^20C_3)/4+...

Find the value of .^(4n)C_0+^(4n)C_4+^(4n)C_8+...+""^(4n)C_(4n) .

Find the values of .^(10)C_(4)

Find the value of .^(20)C_(0) xx .^(13)C_(10) - .^(20)C_(1) xx .^(12)C_(9) + .^(20)C_(2) xx .^(11)C_(8) - "……" + .^(20)C_(10) .

Find the value of 5C_3 + 4C_2

If a/2=b/3 =c/4 =(3a-ab+4c)/p , then find the value of p.

If 1/( ^5C_r)+1/( ^6C_r)+1/(~^4C_r) find the value of r.

If int(1+cos8x)/(tan2x- cot2x)dx= acos8x +c , then find the value of a.