List of top Mathematics Questions asked in AP EAPCET

In a shoe rack there are 4 pairs of shoes and 4 shoes are drawn one after the other at random without replacement. Then the probability of getting at least one correct pair of shoes among the four shoes drawn is:

The probability distribution of a discrete random variable \( X \) is given below: \[ \begin{array}{c|cccc} X = x & -1 & 0 & 1 & 2 \\ P(X = x) & \frac{1}{3} & \frac{1}{6} & \frac{1}{6} & \frac{1}{3} \end{array} \] Then the value of \( 6 \sum x^2 P(X = x) - \text{var}(X) \) is:

If the vectors \( 2\vec{i} - \vec{j} + 3\vec{k}, \vec{i} + 4\vec{j} + \vec{k}, 4\vec{i} + p\vec{j} + \vec{k} \) are coplanar, then \( p = \)

If the vectors \(2\vec{i} + 3\vec{j} + k\), \(-3\vec{i} - 2\vec{j} - 4k\), and \(l\vec{i} - \vec{j} + 3\vec{k}\) form a right-angled triangle for a positive value of \(l\), then the length of its hypotenuse is

If the magnitudes of \( \vec{a} \), \( \vec{b} \), and \( \vec{a} + \vec{b} \) are respectively \( 3 \), \( 4 \), and \( 5 \), then the magnitude of \( \vec{a} - \vec{b} \) is:

In \(\triangle ABC\), if \(a : b : c = 4 : 5 : 6\), then \( \dfrac{\cos A + 3 \cos C}{\cos B} = \)

If A and B are positive acute angles satisfying $3\cos^2 A + 2\cos^2 B = 4$ and $\frac{3\sin A{\sin B} = \frac{2\cos B}{\cos A}$, then A+2B=}

The number of solutions of the equation $\sec x \cos 5x + 1 = 0$ in the interval $[0, 2\pi]$ is

In triangle \(ABC\), if \(\cos A \cos B + \sin A \sin B \sin C = 1\), then \(\sin A + \sin B + \sin C =\)

Sech\(^{-1}(\sin \alpha)\) is equal to:

If $-\frac{2{3}<x<\frac{2}{3}$, then the value of the $5^{th}$ term in the expansion of $\frac{1}{\sqrt{2-3x}}$ when $x = \frac{1}{2}$ is}

The sum of all integers between 1 and 100 (both inclusive) which are divisible by 5 or 13 is

If the sum of two roots of the equation \( x^4 + 2x^3 - 7x^2 - 8x + 12 = 0 \) is zero, then the sum of the squares of the other two roots is

For any two non-zero complex numbers \(z_1\) and \(z_2\), if \(|z_1 + z_2|^2 = |z_1|^2 + |z_2|^2\), then

If \(1, \omega, \omega^2\) are the cube roots of unity, then \( \left(1\left(2+\frac{1}{\omega}\right)\left(2+\frac{1}{\omega^2}\right) + 2\left(3+\frac{1}{\omega}\right)\left(3+\frac{1}{\omega^2}\right) + 3\left(4+\frac{1}{\omega}\right)\left(4+\frac{1}{\omega^2}\right) + \dots + 10 \text{ terms\right) = \)}

\( (1+\sqrt{3}i)^6 - (\sqrt{3}+i)^6 = \)

If \( \alpha, \beta \) are the roots of the equation \( x^2 + bx + c = 0 \) satisfying the conditions \( \alpha+\beta=5 \) and \( \alpha^3+\beta^3=60 \), then \( 3c+2 = \)

The range of the real valued function \( f(x) = \cos^{-1 \left( \dfrac{3}{\sqrt{9x^2 - 12x + 22}} \right) \) is}

If \( t_n = \dfrac{1}{n(n+2)} \), \( n \in \mathbb{N} \), then which one of the following is true?
Assertion (A): \[ t_1 + t_2 + \cdots + t_{2003} = \dfrac{2003}{3005} \]
Reason (R): \[ t_n = \dfrac{1}{n(n+2)} = \dfrac{1}{2} \left( \dfrac{1}{n} - \dfrac{1}{n+2} \right) \]