Ncert solutions for class 9 maths chapter 14 study rankers
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Each chapter is divided into 2 parts - Concept Wise, and Serial Order Wise. We now represent the class intervals along the X-axis on a suitable scale and the corresponding adjusted frequencies on the Y-axis on a different suitable scale. What is its capacity in kilolitres? If the inner radius is 1 m, then find the volume of the iron used to make the tank. Compare and interpret the two measures of central tendency. Step 5: With A and B as centre, draw two arcs intersecting each other with the same radius at X.

Find the mean number of plants per house. The lives in years of 40 such batteries were recorded as follows: 2. The diameter of a metallic ball is 4. Answer in one line- Which is the cell that exists without membrane bound nucleus? A conical pit of top diameter 3. Ignoring the thickness of the plastic sheet, determine: i The area of the sheet required for making the box.

Find its curved surface area. Give one difference between nucleoplasm and cytoplasm. Find the mean number of days a student was absent. The inner radius of the bowl is 5 cm. Although the solutions provided here we do the job of better explaining themselves. About Statistics The modern society is essentially data oriented.

If the radius of the base of the cylinder is 0. In a retail market, fruit vendors were selling mangoes kept in packing boxes. Find the modal monthly expenditure of the families. Answer The given data is very large. In a mathematics test given to 15 students, the following marks out of 100 are recorded: 41, 39, 48, 52, 46, 62, 54, 40, 96, 52, 98, 40, 42, 52, 60 Find the mean, median and mode of this data. A survey conducted by an organisation for the cause of illness and death among the women between the ages 15 - 44 in years worldwide, found the following figures in % : S. The following distribution shows the daily pocket allowance of children of a locality.

How does the chromatin change during cell division? Find the median, mean and mode of the data and compare them. A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million ppm of a certain city. The Vidyalaya was to supply the competitors with cardboard. It is 30 cm long, 25 cm wide and 25 cm high. Answer Let r be the radius of the sphere.

The topic has been explained with the help of solved examples and tables. The following was the distribution of mangoes according to the number of boxes. Find the outer curved surface area of the bowl. Also, explain the functions of endoplasmic reticulum. Answer i The frequency is given as follow: Digits Frequency 0 2 1 5 2 5 3 8 4 4 5 5 6 4 7 4 8 5 9 8 Total 30 ii The digit having the least frequency occurs the least and the digit with highest frequency occurs the most. Shrikhande graph is used in statistical designs. Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets.

All these topics have been taught with the help of precise information and well explanatory diagrams. Note: When you click on a link from a chapter. The solutions given to these questions further aids to build a strong concept for the learner. The topic for studying, the pace of the lesson, and when you want to study, are all decided by you. See also the other exercises or or or Solutions.

For section A, Marks Class Mark Frequency 0-10 5 3 10-20 15 9 20-30 25 17 30-40 35 12 40-50 45 9 For section B, Marks Class Mark Frequency 0-10 5 5 10-20 15 19 20-30 25 15 30-40 35 10 40-50 45 1 Now, we draw frequency polygon for the given data. The topic Irrational Numbers have been described with the help of solved numerical, out of the box information and in between exercises. It is to be covered with a decorative cloth. Go back to main page or move to of the page. We do not charge any type of cost for the solutions, these are completely free to download. The distribution below gives the weights of 30 students of a class. A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard.

The following distribution gives the daily income of 50 workers of a factory. Find the volume of a sphere whose surface area is 154 cm 2. First the concept is taught, then the questions of that concept are solved - from easy to difficult. Therefore the solutions offer comprehensive learning and also helps students develop better math skills along with logical and reasoning skills. Solution: Class Interval fi xi fixi 0. What will be the volume of a packet containing 12 such boxes? In Concept Wise, we have divided the chapter into concepts.