For the following questions answer them individually
The term independent of x in the binomial expansion of $$\left(\frac{3x^2}{2} - \frac{1}{3x}\right)^9$$ is
If $$i^2 = -1$$ and $$A = \begin{bmatrix}i & 0 \\0 & -i \end{bmatrix}$$ then $$A^{-1} =$$
If the hypotenuse of a right angled isosceles triangle is 8 cm. then its area, in square centimeters, is
In the quadrilateral ABCD, it is given that AB = 40, BC = 250, CD = 50, 2BAD = ZABC = $$90^\circ$$ and AD is parallel to BC. The perimeter of the quadrilateral ABCD is
A, B and C are three points on the circle with centre O. In $$\triangle$$ABC if $$\angle$$B = $$60^\circ$$, $$\angle$$C = $$70^\circ$$ then $$\angle$$BOC =
The length of the median through A of $$\triangle$$ABC where A(4, 2), B(6, 5) and C(1, 4) is
If A(4, 1), B(7, 4), C(13, 2), D(x, y) are the vertices of a rectangle ABCD then(x, y) =