RS Aggarwal Class 7 Math Twenty-Three Chapter Probability Exercise 23 Solution EXERCISE 23 (1) A coin is tossed 300 times and we get Head: 136 times and tail: 164 times. When a coin is tossed at random, what is the probability of getting (i) a head, (ii) a tail? Solution: Total number of tossed = […]
RS Aggarwal Class 7 Mathematics Twenty One Chapter Collection and Organisation of Data (Mean, Median and Mode) Exercise 21C Solution EXERCISE 21C (1) Find the mode of the data: (i) 10, 8, 4, 7, 8, 11, 15, 8, 6, 8 Ans: Here, 8 occurs most frequently. Hence, the mode of the data is 8. (ii) […]
RS Aggarwal Class 7 Mathematics Twenty One Chapter Collection and Organisation of Data (Mean, Median and Mode) Exercise 21B Solution EXERCISE 21B (1) Find the median of: (i) 3, 11, 7, 2, 5, 9, 9, 2, 10 Solution: Arranging the numbers in ascending orders, 2, 2, 3, 5, 7, 9, 9, 10, 11 Number of […]
RS Aggarwal Class 7 Mathematics Twenty One Chapter Collection and Organisation of Data (Mean, Median and Mode) Exercise 21A Solution EXERCISE 21A (1) Define the terms: (i) Data: A collection of numerical figures giving some particular type of information is called data. (ii) Raw data: data obtained in the original form is called raw data. […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20G Solution EXERCISE 20G OBJECTIVE QUESTIONS Mark (√) against the correct answer in each of the following: (1) The length of a rectangle is 16 cm and the length of its diagonal is 20 cm. The area of the rectangle is Ans: (c) 192 cm2 (2) […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20F Solution EXERCISE 20F (1) Find the area of a circle whose radius is (i) 21 cm, (ii) 3.5 m. (2) Find the area of a circle whose diameter is (i) 28 cm, (ii) 1.4 m. (3) The circumference of a circle is 264 cm. Find […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20E Solution EXERCISE 20E (1) Find the circumference of a circle whose radius is (i) 28 cm, (ii) 1.4 m. SOLUTION: (2) Find the circumference of a circle whose diameter is (i) 35 cm, (ii) 4.9 m. (3) Find the circumference of a circle of […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20D Solution EXERCISE 20D (1) Find the area of the triangle in which (i) Base = 42 cm and height = 25 cm, Solution: Area = (1/2 × 42 × 25) cm2 = 525 cm2 (ii) Base = 16.8 m and height = 75 cm. Solution: […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20C Solution EXERCISE 20C (1) Find the area of a parallelogram with base 32 cm and height 16.5 cm. Solution: Are of the parallelogram = (32 × 16.5) cm2 = 528 cm2. (2) The base of a parallelogram measures 1 m 60 cm and its height […]
RS Aggarwal Class 7 Mathematics Twentieth Chapter Mensuration Exercise 20B Solution EXERCISE 20B (1) A rectangular grassy plot is 75 m long and 60 m broad. It has a path of width 2 m all around it on the inside. Find the area of the path and the cost of constructing it at Rs 125 […]
