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Mathematics
List of top Mathematics Questions
The line 2x - y = 1 bisects the angle between two lines. If the equation of one line is y = x, then the equation of the other line is
WBJEE
Mathematics
Vectors
Find:
15% of 250
1% of 1 hour
20% of Rs 2500
75% of 1 kg
CBSE Class VII
Mathematics
Use Of Percentages
Describe how the two figures at the right are alike and how they are different. Which box has larger lateral surface area?
CBSE Class VIII
Mathematics
Surface Area of Cube, Cuboid and Cylinder
The coordinates of the foot of the perpendicular drawn from the point \( (0, 1, 2) \) on the \( x \)-axis are given by:
CBSE CLASS XII
Mathematics
Properties of Lines
Find the product.
(i) (5 – 2x) (3 + x)
(ii) (x + 7y) (7x – y)
(iii) (a
2
+ b) (a + b
2
)
(iv) (p
2
– q
2
) (2p + q)
CBSE Class VIII
Mathematics
Multiplying a Polynomial by a Polynomial
A particle moves along the curve
\(6y=x^3+2\)
.Find the points on the curve at which the y coordinate is changing 8 times as fast as the
\(x\)
coordinate
CBSE CLASS XII
Mathematics
Applications of Derivatives
Let a, b, c be three distinct positive real numbers such that (2a)
log
e
a
= (bc)
log
e
b
and b
log
e
2
= a
log
e
c
. Then 6a + 5bc is equal to _____.
Mathematics
Exponential and Logarithmic Functions
The performance of a student in 1st Term and 2nd Term is given. Draw a double bar graph choose the appropriate scale and answer the following:
(i) In which subject, has the child improved his performance the most?
(ii) In which subject is the improvement the least?
(iii) Has the performance gone down in any subject?
CBSE Class VII
Mathematics
Use Of Bar Graphs With A Different Purpose
If
\[ \frac{(2 - i)\,x + (1 + i)}{2 + i} \;+\; \frac{(1 - 2i)\,y + (1 - i)}{1 + 2i} \;=\; 1 - 2i, \quad\text{then}\quad 2x + 4y =\;? \]
TS EAMCET
Mathematics
System of Linear Equations
In the expansion of $\frac{C_1}{C_0} + 2\frac{C_2}{C_1} +3\frac{C_3}{C_2}+…………… n \frac{C_{n}}{C_{n-1}}$ is equal to
KCET
Mathematics
Binomial theorem
The month of September is celebrated as the Rashtriya Poshan Maah across the country. Following a healthy and well-balanced diet is crucial in order to supply the body with the proper nutrients it needs. A balanced diet also keeps us mentally fit and promotes improved level of energy.
\includegraphics[width=\linewidth]{latex1.png}
A dietician wishes to minimize the cost of a diet involving two types of foods, food \( X \) (in kg) and food \( Y \) (in kg), which are available at the rate of \( \text{₹} 16/\text{kg} \) and \( \text{₹} 20/\text{kg} \), respectively. The feasible region satisfying the constraints is shown in Figure-2.
On the basis of the above information, answer the following questions:
[(i)] Identify and write all the constraints which determine the given feasible region in Figure-2. [(ii)] If the objective is to minimize cost \( Z = 16x + 20y \), find the values of \( x \) and \( y \) at which cost is minimum. Also, find the minimum cost assuming that minimum cost is possible for the given unbounded region.
CBSE CLASS XII
Mathematics
Linear Programming
Length of the fence of a trapezium shaped field ABCD is 120 m. If BC = 48 m, CD = 17 m and AD = 40 m, find the area of this field. Side AB is perpendicular to the parallel sides AD and BC.
CBSE Class VIII
Mathematics
Area of a Polygon
Diagram of the adjacent picture frame has outer dimensions = 24 cm x 28 cm and inner dimensions 16 cm x 20 cm. Find the area of each section of the frame, if the width of each section is same.
CBSE Class VIII
Mathematics
Area of a Polygon
Find:
\[ \int \frac{(3 \cos x - 2) \sin x}{5 - \sin^2 x - 4 \cos x} \, dx. \]
CBSE CLASS XII
Mathematics
Integration
In a class test (+3) marks are given for every correct answer and (–2) marks are given for every incorrect answer and no marks for not attempting any question. (i) Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly? (ii) Mohini scores –5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?
CBSE Class VII
Mathematics
Properties Of Division Of Integers
The vertices of triangle \( \triangle ABC \) are \( A(1, 1, 0), B(1, 2, 1) \), and \( C(-2, 2, -1) \). Find the equations of the medians through A and B. Use the equations so obtained to find the coordinates of the centroid.
CBSE CLASS XII
Mathematics
Circles
Minimise Z=x+2y
Subject to 2x+y≥3,x+2y≥6,x,y≥0.
CBSE CLASS XII
Mathematics
Linear Programming Problem
Integrate the function:
\(\frac {1}{\sqrt {(x-a)(x-b)}}\)
CBSE CLASS XII
Mathematics
integral
Find:
(i) 2.7 ÷ 100
(ii) 0.3 ÷ 100
(iii) 0.78 ÷ 100
(iv) 432.6 ÷ 100
(v) 23.6 ÷ 100
(vi) 98.53 ÷ 100
CBSE Class VII
Mathematics
Division Of Decimal Numbers
Evaluate \( \int_1^3 [x - 1] \, dx \)
KEAM
Mathematics
Integration
Give four rational numbers equivalent to:
(i)
\(\frac{-2}{7}\)
(ii)
\(\frac{5}{-3}\)
(iii)
\(\frac{4}{9}\)
CBSE Class VII
Mathematics
Need For Rational Numbers
Verify by drawing a diagram if the median and altitude of an isosceles triangle can be same.
CBSE Class VII
Mathematics
Altitudes Of A Triangle
Let the domains of the functions $ f(x) = \log_4 \log_3 \log_7 (8 - \log_2(x^2 + 4x + 5)) $ and $ g(x) = \sin^{-1} \left( \frac{7x + 10}{x - 2} \right)$ be $ (\alpha, \beta) $ and $ [\gamma, \delta] $, respectively. Then $ \alpha^2 + \beta^2 + \gamma^2 + \delta^2 $ is equal to:
Mathematics
Logarithms
Find the number of digits in the square root of each of the following numbers (without any calculation).
64
144
4489
27225
390625
CBSE Class VIII
Mathematics
Square Roots of Decimals
The number of words, with or without meaning, that can be formed using all the letters of the word ASSASSINATION so that the vowels occur together, is________
Mathematics
permutations and combinations
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