|
When some metal cubes, with edges of 2 cm each, were dropped into the tank, the water level increased by 4 cm. Find the number of cubes in the tank
|
|
0
|
475
|
January 31, 2021
|
|
Maths class 9 cbse
|
|
1
|
2125
|
December 24, 2020
|
|
Are the bonds in each of the following substances ionic, non-polar covalent, or polar covalent? Arrange the substances with polar covalent bonds in order of increasing bond polarity:
|
|
0
|
2929
|
May 29, 2020
|
|
Factorise: 250(a-b)^3+2
|
|
1
|
379
|
June 19, 2019
|
|
Prove (a+b+c)^3 - a^3 - b^3 - c^3 = 3(a+b) (b+c) (c+a)
|
|
1
|
171
|
June 19, 2019
|
|
If a+b+c = 0, then prove that (b+c)^2 / 3bc + (c+a)^2 / 3ca + (a+b)^2 / 3ab = 1
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|
1
|
895
|
June 18, 2019
|
|
If a+b = 12 and ab= 27, find the value of a^3+b^3
|
|
1
|
337
|
June 18, 2019
|
|
If A,B,C are all non zero and A+B+C = 0 Prove that A2/BC + B2/CA + C2/AB = 3
|
|
1
|
419
|
June 18, 2019
|
|
Prove that (a+b+c)3 –a^3-b^3-c63= 3(a+b)(b+c)(c+a)
|
|
1
|
293
|
June 18, 2019
|
|
Factorise: x^3 + 13x^2 + 32x + 20
|
|
1
|
151
|
June 18, 2019
|
|
Represent root 5 on number line
|
|
1
|
596
|
June 18, 2019
|
|
If a+b+c=5,and ab+bc+ca=10,prove a^3+b^3+c^3-3abc=-25
|
|
1
|
584
|
June 17, 2019
|
|
Prove that (a+b+c)whole cube - a cube -b cube - c cube = 3(a+b)(b+c)(c+a )
|
|
1
|
5589
|
June 17, 2019
|
|
The blood groups of 30 students of class VIII are recorded
|
|
1
|
286
|
April 12, 2019
|
|
Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour
|
|
1
|
414
|
April 12, 2019
|
|
Activity : Ask all the students in your class to write a 3-digit number
|
|
1
|
703
|
April 10, 2019
|
|
Activity: Note the frequency of two-wheelers, three-wheelers and four-wheelers going past
|
|
1
|
554
|
April 10, 2019
|
|
The distance (in km) of 40 engineers from their residence to their place of work were found
|
|
1
|
153
|
April 10, 2019
|
|
To know the opinion of the students about the subject statistics, a survey of 200 students
|
|
1
|
283
|
April 10, 2019
|
|
A teacher wanted to analyse the performance of two sections of students in a mathematics test
|
|
1
|
564
|
April 10, 2019
|
|
An organisation selected 2400 families at random and surveyed them to determine
|
|
1
|
505
|
April 10, 2019
|
|
Three coins are tossed simultaneously 200 times with the following frequencies
|
|
1
|
494
|
April 10, 2019
|
|
In a particular section of class IX, 40 students were asked about the month of their birth
|
|
1
|
334
|
April 10, 2019
|
|
1500 families with 2 children were selected randomly, and the following data were recorded
|
|
1
|
703
|
April 10, 2019
|
|
In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays
|
|
1
|
324
|
April 10, 2019
|
|
Give one example of a situation in which (i) the mean is an appropriate measure of central tendency
|
|
1
|
333
|
April 10, 2019
|
|
Find the mean salary of 60 workers of a factory from the following table
|
|
1
|
509
|
April 10, 2019
|
|
Find the mode of 14, 25,14, 28,18,17,18,14, 23, 22,14 and 18
|
|
1
|
502
|
April 10, 2019
|
|
The following observations have been arranged in ascending order
|
|
1
|
311
|
April 10, 2019
|
|
In a mathematics test given to 15 students, the following marks (out of 100) are recorded
|
|
1
|
515
|
April 10, 2019
|
