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S

Sitaram 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Abhijeet Kumar replied | 6 days ago

Mean, Median, Mode.

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Tanay replied | 2 days ago

Mean, median and Mode are the measures of central tendency.

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A

Akhil 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Tanay replied | 3 days ago

Suppose we have data 1, 2, 2, 3, 3, 3, 4, 4, 5.
In this, the frequency of 1 is 1, freq of 2 is 2, freq of 3 is 3, freq of 4 is 2 and freq of 5 is 1. The data having maximum frequency is called mode. So, Mode of the data is 3 (because 3 has the maximum number of frequency).

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Rajendran replied | 2 days ago

The mode is the value that appears most often in a set of data.

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H

Himangi 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Kiran replied | 21 Nov

1/A.M

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Rajendran replied | 24 Nov

A kind of average. To find the harmonic mean of a set of n numbers, add the reciprocals of the numbers in the set, divide the sum by n, then take the reciprocal of the result. The harmonic mean of {a1, a2, a3, a4, . . ., an} is given below.
Formula:-
Harmonic mean = n/{(1/a1)+(1/a2)+(1/a3)...................+1/an}
Eg.:- Calculate the Harmonic mean of 5 and 7.
Solution:...  more»
A kind of average. To find the harmonic mean of a set of n numbers, add the reciprocals of the numbers in the set, divide the sum by n, then take the reciprocal of the result. The harmonic mean of {a1, a2, a3, a4, . . ., an} is given below.
Formula:-
Harmonic mean = n/{(1/a1)+(1/a2)+(1/a3)...................+1/an}
Eg.:- Calculate the Harmonic mean of 5 and 7.
Solution: Harmonic mean = 2/(1/5)+(1/7) = 2/[(7 + 5)/35 = (2 * 35)/12 = 70/12 = 5.83. «less

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M

Munawar 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Shreyansh Jain replied | 2 days ago

Frequency with respect to statistics means the repetitions of any variable.

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Dilip replied | 2 days ago

Number of times something occurs. Suppose there 8 students with height 170 cm then 170 cm has a frequency of 8.

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K

K 13 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Reflection

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Tapas replied | 28 Nov

In the 2nd quadrant. Here x becomes negative and y remains positive.

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Saurabh replied | 4 days ago

Second.

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R

Rishu 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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K

Karuna replied | 24 Nov

The middle most value in a set of data arranged in ascending order is known as median.

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Rajendran replied | 25 Nov

Denoting or relating to a value or quantity lying at the midpoint of a frequency distribution of observed values or quantities, such that there is an equal probability of falling above or below it.

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P

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Kumar replied | 21 Nov

11

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Abhishek replied | 01 Dec

-1

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N

Neha 11 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Sales Tax and VAT

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Minita replied | 21 Nov

Tax charged on inter state sale of goods

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M

Meera replied | 3 days ago

Tax paid to the governing body for sale of goods or services.

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K

Krishan 12 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Symmetry

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Dimple Aggarwal replied | 01 Dec

A, B, C, D, E,H, I, K, M, O, T, U, V, W, X, Y.

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Nisarg replied | 6 days ago

English alphabets having symmetry are:
A, B, C, D, E, K, M, T, U, V, W, Y have one line of symmetry.
H, I, X have two lines of symmetry.
And F, G, J, L, N, P, Q, R, S, Z have neither horizontal nor vertical lines of symmetry.

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R

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K.chakrapani Reddy replied | 28 Nov

Sum of observations. Divided by number of observations.

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Mayank replied | 28 Nov

Arithmetic Mean = Sum of total observations/ No of observations.

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A

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R

Rose replied | 4 days ago

The equations represent Coincident lines.
Hence, a1/a2=b1/b2=c1/c2
i.e. 3/6=1/k=8/16
k=2.

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Saurabh replied | 4 days ago

For two lines to be coincident, the condition is that their ratios of coefficients should be 1. This satisfies only when k=2.

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B

Baby 11 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Sales Tax and VAT

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Abhijeet Kumar replied | 4 days ago

Value Added Tax.

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Amandeep replied | 2 days ago

Value Added Tax.

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Y

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A

Akshay replied | 2 days ago

Two Methods:-
A] Prove all angles are same for two triangles.
B] Prove Ratio of sides of two triangles is same.

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Kartik replied | 2 days ago

If you can prove one of the following properties then you can say two triangles are similar. Those properties are:-
1. Side - Angle - Side,
2. Side - Side - Side,
3. Angle - Angle - Angle.

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N

Nilesh 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Karthika replied | 26 Nov

The graphical representation of data either in pie charts in order to get easy understanding to relate is statistics.

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Rajendran replied | 6 days ago

Branch of mathematics concerned with collection, classification, analysis, and interpretation of numerical facts, for drawing inferences on the basis of their quantifiable likelihood.

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A

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Gayatri replied | 30 Nov

Just for difference - Arithmetic mean of two positive numbers can not be less than geometric mean.

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Rajendran replied | 6 days ago

An arithmetic sequence is a sequence of numbers with the difference between two consecutive terms constant. The difference is called the common difference. A geometric sequence is a sequence with the ratio between two consecutive terms constant. This ratio is called the common ratio.

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S

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D

Deepanshu replied | 28 Nov

First let a = 5x and b = 3x.
Then put in ratio:-
(5a+8b) : (6a-7b) = [5 (5x)+8 (3x)] : [6 (5x) -7 (3x)] = 49:9.

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P

Pooja replied | 29 Nov

49:9.

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B

Balaji 11 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Ratio and Proportion

Find the mean proportion of 25, 64?

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Tapas replied | 3 days ago

Mean proportion of 25, and 64 = Sq. root of (25 x 64) = 5 x 8 = 40.

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Chandan replied | 2 days ago

Mean proportion = square root of (25*64)
= 40 Ans.

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S

Soumya 12 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Annuities

Suppose that I am trying to borrow money from you to finance my business, and I promise to repay you Rs. 1,000 quarterly for two years. If your opportunity cost of funds is 10%, how much are you willing to lend me?

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Shreyansh Jain replied | 2 days ago

Rs. 3636.36.

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Disha replied | 2 days ago

Cost 10%(r) = since quarterly then i divide by 4 ( as 4 quarters). Thus, 10%/4 = 2.5%. as interest will be compounded.
Number of years(n) = 2, to multiply by 4. Hence 2*4 = 8 as 8 times the payments will be made in 2 years.
annuity amount (A) = 1000 (assuming to be an ordinary annuity).
PV of annuity = A*[(1+r)^n-1/r(1+r)^n] = Rs. 7170.1372.

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S

Satish 12 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Symmetry

What is the object which have one curved surface and one vertex and one circular face?

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Rishabh Kumar replied | 3 days ago

Cone.

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M.l.sharma replied | 2 days ago

Cone.

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S

Sai 13 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Reflection

Abscissa of a point is positive in _____?

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P.v.ramana replied | 21 Nov

i and iv quadrants of a rectangular plane.

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Chandan replied | 2 days ago

1st and 4th quadrants of a rectangular plane.

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N

Navneet 13 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Reflection

What is line of symmetry?

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T Raghavender replied | 25 Nov

It's a line passing figure on a plane and dividing it into two parts such that one part is mirror image of the other part.

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Chandan replied | 2 days ago

The "Line of Symmetry" (shown here in white) is the imaginary line where you could fold the image and have both halves match exactly.

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B

Bijoy 13 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Similarity

What do you mean by similarity of triangle?

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Mayank replied | 28 Nov

Two triangles are similar if and only if the corresponding sides are in proportion and the corresponding angles are equal.

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Chandan replied | 3 days ago

Two triangles are similar if they have:
-All their angles equal.
-Corresponding sides are in the same ratio.

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V

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A

Anshu replied | 5 days ago

In chart having a gap is bar chart, no gap Histogram.

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Kailash replied | 5 days ago

Bar graph is simple representation of data on graph but in histogram there is continues data representation in which both class interval and frequencies are given but in bar graph mostly frequencies are given.

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A

Ambar 14 Nov in  Class IX-X Tuition, Mathematics(Class IX-X Tuition)

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Ramesh replied | 01 Dec

A pie chart is circuler graphical chart divided into sectors each sector shows the relative size of each value.
Frequency polygons are graphical devices for understanding the shapes of distribution.

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Rajendran replied | 6 days ago

A pie chart (or a circle chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion.
Frequency polygons are a graphical device for understanding the shapes of distributions. In a Frequency Polygon, a line graph is drawn by joining all the midpoints of the top of the bars of a histogram.

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A

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Kamal replied | 5 days ago

see the attached image to get answer...

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A

Anshu replied | 5 days ago

x1+x2+.........+xn/n.

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