Rs aggarwal class 8 chapter 21 exercise 21 c
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The more you play the finer player you become. Discussion of solutions will help them clear their doubt anytime and anywhere. A scooter was bought at Rs. The formulas for simple and compound interests should be on your tips. Study the histogram carefully and answer the question that follow: i Write the classes, assuming that all the classes are of equal width.

If 1 cubic metre of iron weighs 50 kg, what is the weight of the beam? In the clocks part, the distance covered by minute hand questions are very important. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after years if the interest is: i compounded annually. If 3 is a zero of the polynomial 2x 2 + x + k, find the value of k. Find the quadratic polynomial whose zeros are and. On dividing 3x 3 + x 2 + 2x + 5 by a polynomial g x , the quotient and remainder are 3x β 5 and 9x +10 respectively. Construct a frequency table with class intervals 60 β 70 where 70 are not included , 70 β 80, 80 β 90, etc.

Question 2: The electricity bills in rupees of 25 houses of a certain locality for a month are given below: 324, 700, 617, 400, 356, 365, 435, 506, 548, 736, 780, 378, 570, 685, 312, 630, 584, 674, 754, 776, 596, 745, 565, 763, 472. Daily wages of 45 workers in a factory are given below : Find the median and the mean. Verify the relation between the coefficients and the zeros of the polynomial. We may represent the data as given below: 4 The weekly pocket expenses in rupees of 30 students of a class are given below: 62, 80, 110, 75, 84, 73, 60, 62, 100, 87, 78, 94, 17, 86, 65, 68, 90, 80, 118, 72, 95, 72, 103, 96, 64, 94, 87, 85, 105, 115. The base of an isosceles triangle is 6 cm and its perimeter is 16 cm. All Chapter-20 Mensuration Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Also, students aspiring for special officer cadre and clerical cadre in various organizations also get benefited from this book.

What amount will she pay at the end of 2 years and 4 months to clear the loan? A strong grip on the subject and the concepts will be achieved by practicing this book. Its total surface area is Ans: c 294 cm 2 4 The cost of painting the whole surface area of a cube at the rate of 10 paise per cm 2 is Rs 264. Verify that 2 is a zero of the polynomial x 3 + 4x 2 β 3x β 18. By actual division, show that x 2 β 3 is a factor of 2x 4 + 3x 3 β 2x 2 β 9x β 12. Its value depreciated at the rate of 8% per annum. Find a cubic polynomial whose zeros are 2, -3 and 4. Find a quadratic polynomial whose zeros are 2 and -5.

In this chapter, the students of class 8 will learn how to organize and group data. We may represent the data as given below: 3 The weekly wages in rupees of 28 workers of a factory are given below: 668, 610, 642, 658, 668, 620, 719, 720, 700, 690, 710, 642, 672, 654, 692, 706, 718, 702, 704, 678, 615, 640, 680, 716, 705, 615, 636, 656. So it is highly recommended that all the students should understand the math concepts explained in the rs aggarwal books clearly and thoroughly, which will ensure that the student can easily answer the relevant math problems in the exams correctly and get good grades. Each and every entrance exam definitely contains one question on profit and loss. Find a cubic polynomial whose zeros are 3, 5 and -2. Write the zeros of the polynomial x 2 β x β 6.

A strong grip on the subject and the concepts will be achieved by practicing this book. But you can also download this e-book from the link given below. All Rs Aggarwal 2018 Solutions for class Class 8 Math are prepared by experts and are 100% accurate. In a laboratory, the count of bacteria in a certain experiment was increasing at the rate of 2. A strong grip on the subject and the concepts will be achieved by practicing this book. Using empirical formula, calculate its mode.

The number of boys is 8 more than the number of girls. Solution: Arranging in ascending order : 28, 31, 32, 32, 32, 32, 34, 36, 38, 40, 41. Solution: Find the quotient and the remainder when: Question 6. The whole surface area of the cylinder is Ans: a 1837 cm 2 28 The height of a cylinder is 14 cm and its curved surface area is 264 cm 2. Ans: c 6400 6 How many cubes of 10 cm edge can be put in a cubical box of 1 m edge? Using empirical formula, calculate its mode. The probability question related with dices and handshakes are very important. Had I borrowed this sum at 6% per annum compound interest, what extra amount would I have to pay? Statement 1: Angle of incidence is greater than the angle of reflection.

Question 3: The weekly wages in rupees of 28 workers of a factory are given below: 668, 610, 642, 658, 668, 620, 719, 720, 700, 690, 710, 642, 672, 654, 692, 706, 718, 702, 704, 678, 615, 640, 680, 716, 705, 615, 636, 656. The ages of A and B are in the ratio 5 : 7. Would this interest be more than the interest he would get if it was compounded annually? Find the mode of the ages. Find the zeros of the polynomial x 2 + x β p p + 1. Solution: Zeros of a quadratic polynomial are 2, -6 Question 14.

She would be paid interest at 5% per annum compounded annually. This book is also preferred by students in their campus recruitment drives as a great resource for preparation. If you have any doubts, please comment below. Question 6: The heights in cm of 22 students were recorded as under: 125, 132, 138, 144, 142, 136, 134, 125, 135, 130, 126, 132, 135, 142, 143, 128, 126, 136, 135, 130, 130, 133. Who pays more interest and by how much? It is given that -1 is one of the zeros of the polynomial x 3 + 2x 2 β 11x β 12. Ratio and proportion should be dealt with very cautiously as a single mistake can lead to a wrong answer.

This book is easily available in the market. The pattern followed in the book is as per the latest syllabus followed by the examinations. Find a cubic polynomial whose zeros are , 1 and -3. Each and Every topic of quantitative ability has been explained in a detailed manner along with the approach followed. Find: i The amount credited against her name at the end of the second year. Question 11: The histogram given below shows the number of literate females in the age group of 10 to 40 years.