2023-11-07 13:46
Happy Diwali 2023
Happy DiwaliLets celebrate the festival
in the true senseby spreading
joy and light
Have a Happy,Safe and blessed Diwali! :)
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2023-09-05 15:58
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2023-05-08 14:18
Name of the Author – R.S. AggarwalClass – 8.Subject – Mathematics.Board – CBSEChapter 1 – Rational NumberEx - 1AEx - 1BEx - 1CEx - 1DE… Read More
2023-05-08 13:40
EXERCISE 25BOBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) In a spinning wheel, there are 3 white and 5 green sectors. It is spinned. What is the probabili… Read More
2023-05-08 13:39
EXERCISE 25A(1) (i) A coin is tossed. What are all possible outcomes?Ans: All possible outcomes are Head (H) and Tail (T).(ii) Two coins are tossed simultaneously. What are all possible outc… Read More
2023-05-08 13:39
EXERCISE 24BOBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) A man’s monthly salary is Rs 24000 and his monthly expenses on travel are Rs 2500. The cen… Read More
2023-05-08 13:39
(1) The monthly income of a family is Rs 28800. The monthly expenditure of the family on various items is given below.ItemRentFoodClothingEducationSavingsExpenditure(in Rs)800010800560… Read More
2023-05-08 13:37
2023-05-08 13:25
2023-05-08 13:11
Sorry Due to some reason This Exercise is not Available Read More
2023-05-08 13:08
EXERCISE 21B(1) The marks obtained by 40 students of a class in an examination are given below: 8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 2… Read More
2023-05-08 13:07
EXERCISE 21A(1) The number of members in 20 families are given below:4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7Prepare a frequency distribution of the data.Solution: Arrange… Read More
2023-05-08 13:07
EXERCISE 20COBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) The maximum length of a pencil that can be kept in a rectangular box of dimensions 12 cm &t&hell…Read More
2023-05-08 13:06
EXERCISE 20B(1) Find the volume, curved surface area and total surface area of each of the cylinders whose dimensions are:(i) Radius of the base = 7 cm and height = 50 cm(ii) Radius of the b… Read More
2023-05-08 13:06
EXERCISE 20A(1) Find the volume, lateral surface area and the total surface area of the cuboid whose dimensions are:(i) Length = 22 cm, breadth = 12 cm and height = 7.5 cmSolution: Volume of… Read More
2023-05-08 13:05
EXERCISE 19B(1) Define Euler’s relation between the number of faces, number of edges and number of vertices for various 3-dimensional figures.Ans: In a 3-dimensional figure, let the nu… Read More
2023-05-08 13:05
EXERCISE 19A(1) Write down the number of faces of each of the following figures:(i) Cuboid = 6 faces(ii) Cube = 6 faces(iii) Triangular prism = 5 faces (2 triangular and 3 rectangular)(… Read More
2023-05-08 13:04
EXERCISE 18COBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) The parallel sides of a trapezium measure 14 cm and 18 cm and the distance between them is 9 cm… Read More
2023-05-08 13:04
EXERCISE 18B(1) In the given figure, ABCD is a quadrilateral in which AC = 24 cm, BL ⊥ AC and DM ⊥ AC such that BL = 8 cm and DM = 7 cm. Find the area of quad. ABCD… Read More
2023-05-08 13:03
EXERCISE 18A(1) Find the area of a trapezium whose parallel sides are 24 cm and 20 cm and the distance between them is 15 cm.(2) Find the area of a trapezium whose parallel sides are 38.7 cm… Read More
2023-05-08 13:02
EXERCISE 17B(1) Construct a parallelogram ABCD in which AB = 5.2 cm, BC = 4.7 cm and AC = 7.6 cm.Steps of construction:(i) Draw AB = 5.2 cm(ii) With A as centre and radius 7.6 cm draw an arc… Read More
2023-05-08 13:00
EXERCISE 17A(1) Construct a quadrilateral ABCD in which AB = 4.2 cm, BC = 6 cm, CD = 5.2 cm, DA = 5 cm and AC = 8 cm.Steps of constructionStep 1: Draw AB = 4.2 cm.Step 2: with a as centre an… Read More
2023-05-08 13:00
EXERCISE 16BOBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) The two diagonals are not necessarily equal in aAns: (c) Rhombus(2) The lengths of the diagonals… Read More
2023-05-08 12:59
EXERCISE 16A(1) ABCD is parallelogram in which ∠A = 110o. Find the measure of each of the angles ∠B, ∠C and ∠D.Solution: It is a given that ABCD is a parallelogram in wh… Read More
2023-05-08 12:59
EXERCISE 15(1) Fill in the blanks:(i) A quadrilateral has four sides.(ii) A quadrilateral has four angles.(iii) A quadrilateral has four vertices, no three of w… Read More
2023-05-08 12:58
EXERCISE 14BOBJECTIVE QUESTIONSTick (√) the correct answer in each of the following:(1) How many diagonals are there in a pentagon?Ans: (a) 5(2) How many diagonals are there in a hexag… Read More
2023-05-08 12:58
EXERCISE 14A(1) Find the measure of each exterior angle of a regular(2) Is it possible to have a regular each of whose exterior angles is 50o?Since 7.2 is not a whole number. So, it is not i… Read More
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