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Class 10 - Mathematics
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whats the easiest method to solve statistics problems
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June 26, 2017
Class 10 - Mathematics
0
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a circular track around a sports ground has a circumference of 1080m. two cyclists A and B start together and cycled at the constant speeds of 6m/s and 9m/s respectively round the cirlcular track. after how many minutes will they meet again at the atarting pint
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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solve using cross multiplication-ax+by=a+b divided by 2;3x+5y=4
56 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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The arithmetic mean of the following data is 14. Find the value of K. X= 5 10 15 20 25 and F= 7 K 8 4 5
188 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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if A+B=90,show that whole uder root cosA cosecB-cosA sinB=sin A
90 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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find the number by which 546 is divided to get 7 as quotient and 7 as remainder?
59 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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show that any positive even integer is of the form 4q, 4q+2 , where q is some positive integer ?
71 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
which sides are in proportion when triangles are similar
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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2sin x/2 = 1
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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rd sharma class 10 exercise 5.2 question no 21
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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while covering a distance of 30 km, Ajeet takes 2 hours more than Amit. If Ajeet doubles his speed he would take one hour less than Amit. Find their speeds of walking.
234 views
doubts
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June 26, 2017
Class 10 - Mathematics
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if in a rectangle length and breadth are reduced by 2 the initial area decreases by 28 sq. units. if the length is decreased by 1 unit and the breadth is increased by 2 units the area increases by 33 sq. units. find the length and breadth of the rectangle.
61 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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ramesh travels 760 km partly by train and partly by car. he takes 8 hrs to travel 160 km by train and the rest by car. he takes 12 mins more if he travels 240 km by train and the rest by car. find the speed of the train and car.
95 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
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Hi, I have doubt regarding Statistics – R S Aggrawal exercise 9B Question 2. The median class taken in the solution is 28-35. n/2 is 25. Cumulative frequency of 21-28 and 28-35 is 25. As per my understanding, median class should have cumulative frequency just greater than n/2. So, median class should not be 21-28 or 28-35 which has cumulative frequency equal to n/2. Can you please explain why 1) Median class is taken as 28 – 35 (and not 35 – 42 which has cumulative frequency greater than 25) 2) What should be taken as median class if cumulative frequency is same for two classes (one class having frequency 0, thus making cumulative frequency same)?
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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Hi, The mean obtained by all 3 methods should be same. However, in R S Aggarwal 9D Question 5 mean obtained is 205 if calculated using direct and assumed mean method. If step deviation method is used using assumed mean(A) =225 and class size(h) = 50, mean comes as 208.3. Request you to kindly clarify .
58 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
father’s age is three times the sum of his two children.after 5years his age will be twice the sum of ages of two children.find the age of father
63 views
doubts
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June 26, 2017
Class 10 - Mathematics
0
Ans
rd sharma class 10exercise 2.1 question11to 20
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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WHY WE USE 3M INSTEAD OF 9M IN CUBING TO OBTAIN 3M OR 3M+1h
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doubts
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June 26, 2017
Class 10 - Mathematics
0
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write the condition to be satisfied by q so that a rational number p/q has a terminating decimal expression
73 views
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June 26, 2017
Class 10 - Mathematics
0
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find the zeroes of the following quadractics polynomials and verify the relationshi[p between the zeroes and the coefficient tsqu- 15
64 views
doubts
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June 26, 2017
Class 10 - Mathematics
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