11.

The small extremely fast RAM's are called as

• cache

• heaps

• accumulators

• stacks

The value of i² + i⁴ + i⁶ + ... (2n + 1) terms is

• - 1

• 1

• - i

• i

The argument of the complex number $- 1 + \mathrm{i}\sqrt{3}$ is

• 45°

• 60°

• 120°

• 150°

If $\frac{{\mathrm{a}}^{\mathrm{n} + 1} + {\mathrm{b}}^{\mathrm{n} + 1}}{{\mathrm{a}}^{\mathrm{n}} + {\mathrm{b}}^{\mathrm{n}}}$ be the AM of a and b, then n is equal to

• - 1

• 0

• 1

• None of these

x^1/2 . x^1/4 . x^1/8 ... $\infty$ equal to

• 0

• 1

• $\infty$

• x

If the roots of the equation x² + px + q = 0 differ by 1, then

• p² = 4q + 1

• p² = 4q

• p² = 4q - 1

• p² = - 4q

If a = 2, b = 3 and c = 5in $∆$BC, then $\angle$C is to equal

• $\frac{\mathrm{\pi }}{2}$

• $\frac{\mathrm{\pi }}{4}$

• $\frac{\mathrm{\pi }}{6}$

• None of these

The centroid of the triangle formed by the lines x + y = 1, 2x + 3y = 6 and 4x - y = - 4 lies in the quadrant

• I

• II

• III

• IV

If an equilateral triangle is inscribed in the circle x² + y² = a², the lenth of its each side is

• $\sqrt{2}\mathrm{a}$

• $\sqrt{3}\mathrm{a}$

• $\frac{\sqrt{3}}{2}\mathrm{a}$

• $\frac{1}{\sqrt{3}}\mathrm{a}$

If the vertex is (3,0) and the extremities of the latusrectum are (4, 3) and (4, - 3), then the equation of the parabola is

• y² = 4(x - 3)

• x² = 4(y - 3)

• y² = - 4(x + 3)

• x² = - 4(y + 3)