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Reshma 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

The demand of different shirt sizes are given below. Find the modal shirt sizes:


Size
38
39
40
41
42
43
44
No. of persons
26
39
20
15
13
7
5

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K 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

The following observations have been arranged in the ascending order. If the median of the data is 63. Find x: 29, 32, 48, 50, x, x +2, x +3, 72, 78, 84, 95?

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Reshma 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

Verify the empirical formula for the following data: 2, 3, 2, 5, 6, 3, 4, 7, 4, 9?

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Millennium 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

What is the mean of all factors of 12?

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Aman 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

What is the mean of the following data: x, (x + 1), (x + 2), (x + 3), (x + 4)?

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Khushwunder 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

The mean of 8 observation is 30. If an observation 23 is deleted, then what is the value of new mean?

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Malvika 05/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Measures of Central Tendency

What is the value of x, if the median of the arranged observations 5, 7, 10, (x + 4), ( x + 6), 18, 20, 22 is 16?

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Ravi Shankar 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

Define histogram with respect to graphical representation?

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Bharamani 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for finding class mark for a class interval?

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Jewel 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

The class marks distribution are 37, 42, 47, 52, 57. Determine the class size and the class limits of the last class mark?

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Naina 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

How does the procedure of drawing a histogram differ when class intervals are unequal in comparison to equal class intervals in a frequency table?

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Utpal 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for finding the mean of group data?

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Kalpana 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for finding the mean of a grouped data with class interval as direct method?

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Santosh 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for finding mean as assume mean method?

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Nimesh 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for finding the mode of a grouped data?

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Srinitha 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

The wickets taken by a bowler in 10 cricket matches are as follows:
2, 6, 4, 5, 0, 2, 1, 3, 2, 3. Find the mode of data?

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Rema 06/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Graphical Representation of Data

What is the formula for median of even observation?

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Isha 03/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Algebra

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Rajendran replied | 25/11/2016

y = mx + c where, c is the y intercept.
we have -4x +6y = -12
6y = 4x - 12
y = (4x/6) - 12/6
y = (4x/6) - 2.
Therefore y intercept = -2.

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Nareshreddy M replied | 27/11/2016

Equation of line in intercept form is (x/a)+(y/b)=1;
Where, a is x intercept and b is y intercept.
Divide equation by ( -12) so that RHS =1.
(X/3)+(Y/-2)=1.
Y intercept is -2

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Saurabh replied | 04/12/2016

n= 34.

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Manikandan replied | 08/12/2016

a=7, l=205, d=6 then number of terms in A.P =(l-a)/d +1
=(205-7)/6 +1
=198/6 +1
=33 +1
n=34.

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Birenkumar replied | 25/11/2016

Short method:
The difference between side1 and side 2 is Two and area is 195 so we can do multiplication of side 1 and side 2 up to getting area 195 base area of rectangle = side1×side2 (formula).
Such as 10×12=120 (not answer)
11 x 13 =141(not answer)
13×15 =195 (answer)
Side1 = 13 side2=15.

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Daljit Kaur replied | 25/11/2016

13cm, 15cm

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Usha 03/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Algebra

Simplify (8 * cube of x) / (2 * cube of x)?

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Sarvajeet replied | 23/11/2016

2.

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Rajendran replied | 25/11/2016

8*cube of x/2*cube of x = 8/2 = 4.

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Basundhara 03/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Algebra

Simplify [square of (- square of a * cube of b)] * (square of c)?

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Daljit Kaur replied | 25/11/2016

(Fourth power of a) (sixth power of b) (c square).

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Mamata replied | 29/11/2016

Square of ( -a^2b^3) ) c^2
= a^4b^6c^2
= a fourth b sixth c squares.

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Prabhu 03/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Volumes

If l, b, h, S and V are length, breadth, height, surface area and volume respectively of a cuboid, prove that: 1/V = 2/S(1/l + 1/b + 1/h)?

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Ram Mohan replied | 02/12/2016

If l, b, h, S and V are length, breadth, height, surface area and volume respectively of a cuboid, Then, V = lbh
Let us take the relation S = 2 (lb +bh + lh). Now dividing both sides with V * S, we get:-
1/V = 2 ( lb + bh = lh )/ (V * S) = 2 ( lb + bh = lh )/ (lbh * S) ...... ( Substituting lbh for V)
==> 1/V = =2 [(lb/lbh )+( bh/lbh ) + (lh/ibh )] / S
==> 1/V...  more»
If l, b, h, S and V are length, breadth, height, surface area and volume respectively of a cuboid, Then, V = lbh
Let us take the relation S = 2 (lb +bh + lh). Now dividing both sides with V * S, we get:-
1/V = 2 ( lb + bh = lh )/ (V * S) = 2 ( lb + bh = lh )/ (lbh * S) ...... ( Substituting lbh for V)
==> 1/V = =2 [(lb/lbh )+( bh/lbh ) + (lh/ibh )] / S
==> 1/V = 2/S(1/l + 1/b + 1/h) proved. «less

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Ram Mohan replied | 02/12/2016

If l, b, h, S and V are length, breadth, height, surface area and volume respectively of a cuboid, Then
We have S = 2( lb + bh + lh ) and V = lbh
Let us take the relation S = 2(lb +bh + lh).
Now dividing both sides with V * S, we get
1/V = 2 ( lb + bh = lh )/ (V * S) = 2 ( lb + bh +lh )/ (lbh * S) ...... ( after Substituting lbh for V)
==> 1/V = 2 [(lb/lbh...  more»
If l, b, h, S and V are length, breadth, height, surface area and volume respectively of a cuboid, Then
We have S = 2( lb + bh + lh ) and V = lbh
Let us take the relation S = 2(lb +bh + lh).
Now dividing both sides with V * S, we get
1/V = 2 ( lb + bh = lh )/ (V * S) = 2 ( lb + bh +lh )/ (lbh * S) ...... ( after Substituting lbh for V)
==> 1/V = 2 [(lb/lbh )+( bh/lbh ) + (lh/lbh )] / S
==> 1/V = 2/S(1/l + 1/b + 1/h) proved. «less

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Kevin 03/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Real Numbers

Is 2 + square root of 2 is not a rational number?

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Sridharlaramesh replied | 18/11/2016

No

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Ram Mohan replied | 21/11/2016

Mr Kevin, the Author of the Question, wants to know, whether his presumption, that " (2 + sqrt 2) is not a RATIONAL NUMBER" is TRUE or FALSE.. "Sqrt 2" is an irrational number. "( 2 + sqrt 2)" is a compound number, containing an irrational part. Therefore the whole one, is an irrational number. That is; "(2+ sqrt2)" is not a rational number. Therefore the presumption of Mr Kevin...  more»
Mr Kevin, the Author of the Question, wants to know, whether his presumption, that " (2 + sqrt 2) is not a RATIONAL NUMBER" is TRUE or FALSE.. "Sqrt 2" is an irrational number. "( 2 + sqrt 2)" is a compound number, containing an irrational part. Therefore the whole one, is an irrational number. That is; "(2+ sqrt2)" is not a rational number. Therefore the presumption of Mr Kevin the Author is TRUE. Hence the answer to this Question should be Either 'TRUE' OR " YES" But not the "NO" given by Mr Sreedharlaramesh and Mr Dheerendra. Please verify . «less

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Joseph replied | 16/11/2016

Lcm of 2 and 3 is 6. now make sure your denominators are same 2/6 and 3/6. Need 3 rational no. so multiply the numerator and denominator both by 4. (for eg 5 rational no means by 6....ie). Now u will get 8/24 and http://www.12/24.in between 3 required rational no are there... 9/24'10/24,11/24.

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Karthik Vendhan K replied | 17/11/2016

1/3 = 0.33333.... and 1/2 = 0.5
Rational numbers between 0.3333..... and 0.5 were 0.34 = 34/100 = 17/50 , 0.35 = 35/100 = 7/20, 0.36 = 36/100 = 9/25, ..................,0.4 = 40 /100 = 2/5, etc.
There are infinite rational numbers between any two rational numbers.

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