For the following questions answer them individually
The sum of the first 10 terms of the progression 2, 5, 8, 11, .... is
If the $$n^{th}$$ term of the G.P. $$2, 2\sqrt{2}, 4, ......$$ is 128, then n =
The constant term in the bionomial expansion of $$\left(3x^2 - \frac{1}{4x}\right)^6$$ is
If $$C_r = ^{10}C_r$$, for $$0 \leq r \leq 10$$, then $$2C_0 + 3C_1 + 4C_2 + ......... + 11C_{10} =$$
If A is a $$4 \times 4$$ matrix and det 2A = 192, then det A =
$$\left(\begin{array}{c}2 & 6\\ 1 & 3\end{array}\right)\left(\begin{array}{c}3 & -6\\ -1 & 2\end{array}\right) =$$
$$\lim_{x \rightarrow 3} \frac{x^3 - 3x^2}{3x^2 - 4x - 15} =$$
The internal angle between two adjacent sides of a regular pentagon in radians is