Digestion In Human beings


0

267

July 26, 2021

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

1215

January 31, 2021

Maths class 9 cbse


1

3275

December 24, 2020

Are the bonds in each of the following substances ionic, nonpolar covalent, or polar covalent? Arrange the substances with polar covalent bonds in order of increasing bond polarity:


0

3342

May 29, 2020

Factorise: 250(ab)^3+2


1

602

June 19, 2019

Prove (a+b+c)^3  a^3  b^3  c^3 = 3(a+b) (b+c) (c+a)


1

347

June 19, 2019

If a+b+c = 0, then prove that (b+c)^2 / 3bc + (c+a)^2 / 3ca + (a+b)^2 / 3ab = 1


1

1313

June 18, 2019

If a+b = 12 and ab= 27, find the value of a^3+b^3


1

613

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

784

June 18, 2019

Prove that (a+b+c)3 –a^3b^3c63= 3(a+b)(b+c)(c+a)


1

400

June 18, 2019

Factorise: x^3 + 13x^2 + 32x + 20


1

293

June 18, 2019

Represent root 5 on number line


1

861

June 18, 2019

If a+b+c=5,and ab+bc+ca=10,prove a^3+b^3+c^33abc=25


1

846

June 17, 2019

Prove that (a+b+c)whole cube  a cube b cube  c cube = 3(a+b)(b+c)(c+a )


1

7216

June 17, 2019

The blood groups of 30 students of class VIII are recorded


1

443

April 12, 2019

Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour


1

520

April 12, 2019

Activity : Ask all the students in your class to write a 3digit number


1

922

April 10, 2019

Activity: Note the frequency of twowheelers, threewheelers and fourwheelers going past


1

672

April 10, 2019

The distance (in km) of 40 engineers from their residence to their place of work were found


1

220

April 10, 2019

To know the opinion of the students about the subject statistics, a survey of 200 students


1

449

April 10, 2019

A teacher wanted to analyse the performance of two sections of students in a mathematics test


1

824

April 10, 2019

An organisation selected 2400 families at random and surveyed them to determine


1

728

April 10, 2019

Three coins are tossed simultaneously 200 times with the following frequencies


1

554

April 10, 2019

In a particular section of class IX, 40 students were asked about the month of their birth


1

405

April 10, 2019

1500 families with 2 children were selected randomly, and the following data were recorded


1

876

April 10, 2019

In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays


1

506

April 10, 2019

Give one example of a situation in which (i) the mean is an appropriate measure of central tendency


1

390

April 10, 2019

Find the mean salary of 60 workers of a factory from the following table


1

652

April 10, 2019

Find the mode of 14, 25,14, 28,18,17,18,14, 23, 22,14 and 18


1

667

April 10, 2019

The following observations have been arranged in ascending order


1

372

April 10, 2019
