Binomial Theorem

1.

The value of

is

10 1 2 20 NULL NULL NULL

2.

The coefficient of

in the expansion of

is

30 60 40 None of these NULL NULL NULL

3.

If

, then
$\small (_{}^{n}\textrm{C}_{0})^2+(_{}^{n}\textrm{C}_{1})^2+(_{}^{n}\textrm{C}_{2})^2+....+(_{}^{n}\textrm{C}_{5})^2$ is equal to

250 254 245 252 NULL NULL NULL

4.

The coefficient of

in the expression

is

NULL NULL NULL

5.

For

the constant term in the expansion of

2 1

$\small -\frac{1}{2}$

NULL NULL NULL

Congratulations