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Mathematics
List of top Mathematics Questions asked in AP EAPCET
A bag contains 7 green and 5 black balls. 3 balls are drawn at random one after the other. If the balls are not replaced, then the probability of all three balls being green is
AP EAPCET - 2022
AP EAPCET
Mathematics
Probability
If
$x$
is chosen at random from the set
$\{1,2,3,4\}$
and
$y$
is chosen at random from the set
$\{5,6,7\}$,
then the probability that
$xy$
will be even is
AP EAPCET - 2022
AP EAPCET
Mathematics
Probability
The discrete random variables
$X$
and
$Y$
are independent from one another and are defined as
$X \sim B(16, 0.25)$
and
$Y \sim P(2)$.
Then the sum of the variances of
$X$
and
$Y$
is
AP EAPCET - 2022
AP EAPCET
Mathematics
Probability
If 6 is the mean of a Poisson distribution, then
$P(X \geq 3) =$
AP EAPCET - 2022
AP EAPCET
Mathematics
Probability
The mean deviation about the mean for the following data:
5, 6, 7, 8, 6.9, 13, 12, 15
AP EAPCET - 2022
AP EAPCET
Mathematics
Statistics
The point of intersection of the lines
\[ \vec{r} = 2\vec{b} + t(6\vec{c} - \vec{a}) \quad \text{and} \quad \vec{r} = \vec{a} + s(\vec{b} - 3\vec{c}) \text{ is:} \]
AP EAPCET - 2022
AP EAPCET
Mathematics
Vectors
In quadrilateral ABCD,
$\vec{AB} = \vec{a},\ \vec{BC} = \vec{b},\ \vec{DA} = \vec{a} - \vec{b}$. M is midpoint of BC and X lies on DM such that $\vec{DX} = \dfrac{4}{5}\vec{DM}$. Then the points A, X and C:
AP EAPCET - 2022
AP EAPCET
Mathematics
Vectors
Given vectors
$3\vec{a} - 5\vec{b}$ and $2\vec{a} + \vec{b}$ are mutually perpendicular, and so are $\vec{a} + 4\vec{b}$ and $-\vec{a} + \vec{b}$. Find the acute angle between $\vec{a}$ and $\vec{b}$:
AP EAPCET - 2022
AP EAPCET
Mathematics
Vectors
Let
$\vec{a} = xi + yj + zk$
and
$x = 2y$.
If
$|\vec{a}| = 5\sqrt{2}$
and
$\vec{a}$
makes an angle of
$135^\circ$
with the z-axis then
$\vec{a} =$
AP EAPCET - 2022
AP EAPCET
Mathematics
Vectors
Let
$\vec{a}, \vec{b}, \vec{c}$
be the position vectors of the vertices of a triangle
$ABC$.
Through the vertices, lines are drawn parallel to the sides to form the triangle
$A'B'C'$.
Then the centroid of
$\Delta A'B'C'$
is
AP EAPCET - 2022
AP EAPCET
Mathematics
Vectors
If the angles of a triangle ABC are in the ratio 1:2:3, then the corresponding sides are in the ratio:
AP EAPCET - 2022
AP EAPCET
Mathematics
Geometry
In a triangle ABC,
$r_1 \cot \dfrac{A}{2} + r_2 \cot \dfrac{B}{2} + r_3 \cot \dfrac{C}{2} = $ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Triangles
The value of
$\dfrac{1 + \tanh x}{1 - \tanh x} =$ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Hyperbolic Functions
If
$\cosech\,x = \dfrac{4}{5}$,
then
$\sinh x = $ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Hyperbolic Functions
If
$(1 + \tan1^\circ)(1 + \tan2^\circ)\dots(1 + \tan45^\circ) = 2^n$,
then
$n =$ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Trigonometry
In a triangle ABC, if
$a \ne b$,
then
\[ \frac{a\cos A - b\cos B}{a\cos B - b\cos A} + \cos C = ? \]
AP EAPCET - 2022
AP EAPCET
Mathematics
Trigonometry
In a triangle ABC,
$a = 2,\ b = 3,\ c = 4$,
then
$\tan\left(\dfrac{A}{2}\right) = $ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Trigonometry
The value of
$\dfrac{\sin\theta + \sin3\theta}{\cos\theta + \cos3\theta}$
is:
AP EAPCET - 2022
AP EAPCET
Mathematics
Trigonometric Identities
Simplify:
$\dfrac{\cos\theta}{1 - \tan\theta} + \dfrac{\sin\theta}{1 - \cot\theta}$
AP EAPCET - 2022
AP EAPCET
Mathematics
Trigonometric Identities
If
\[ \frac{x^4 + 24x^2 + 28}{(x^2 + 1)^3} = \frac{Ax + B}{x^2 + 1} + \frac{Cx + D}{(x^2 + 1)^2} + \frac{Ex + F}{(x^2 + 1)^3} \]
then the value of
$A + B + C + D + E + F =$ ?
AP EAPCET - 2022
AP EAPCET
Mathematics
Algebra
The number of real roots of the equation
\[ \frac{\sqrt{x}}{\sqrt{1 - x}} + \frac{\sqrt{1 - x}}{\sqrt{x}} = \frac{13}{6} \]
is:
AP EAPCET - 2022
AP EAPCET
Mathematics
Algebraic Expressions
If
$4^x - 3^{x - \frac{1}{2}} = 3^{x + \frac{1}{2}} - 2^{2x - 1}$,
then the value of
$x$
is:
AP EAPCET - 2022
AP EAPCET
Mathematics
Exponential and Logarithmic Functions
The total number of permutations of $n$ different things taken not more than $r$ at a time, when each thing may be repeated any number of times is:
AP EAPCET - 2022
AP EAPCET
Mathematics
permutations and combinations
How many chords can be drawn through 21 points on a circle?
AP EAPCET - 2022
AP EAPCET
Mathematics
permutations and combinations
A person writes letters to 6 friends and addresses envelopes. In how many ways can the letters be placed so that at least two go to wrong envelopes?
AP EAPCET - 2022
AP EAPCET
Mathematics
permutations and combinations
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