Jaclin

Asked: November 4, 2020In: Class 9

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.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Statistics NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 14.4 Page No:269 Questions No:2

Kiran Chaudhary

Asked: November 4, 2020In: Class 9

The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x. 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Statistics NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 14.4 Page No:269 Questions No:3

Kiran Chaudhary

Asked: November 4, 2020In: Class 9

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

NCERT Solutions for Class 9 Maths Chapter 14 Important NCERT Questions Statistics NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 14.4 Page No:269 Questions No:4

Geeta Kapoor

Asked: November 4, 2020In: Class 9

In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary.

NCERT Solutions for Class 9 Maths Chapter 15 Important NCERT Questions Probability NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 15.1 Page No:283 Questions No:1

Geeta Kapoor

Asked: November 4, 2020In: Class 9

Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

NCERT Solutions for Class 9 Maths Chapter 15 Important NCERT Questions Probability NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 15.1 Page No:285 Questions No:9

Geeta Kapoor

Asked: November 4, 2020In: Class 9

Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

NCERT Solutions for Class 9 Maths Chapter 15 Important NCERT Questions Probability NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 15.1 Page No:285 Questions No:10

Geeta Kapoor

Asked: November 4, 2020In: Class 9

Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at random contains more than 5 kg of flour.

NCERT Solutions for Class 9 Maths Chapter 15 Important NCERT Questions Probability NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 15.1 Page No:285 Questions No:11

Rajiv Tyagi

Asked: November 4, 2020In: Class 9

Construct an angle of 90° at the initial point of a given ray and justify the construction.

NCERT Solutions for Class 9 Maths Chapter 11 Important NCERT Questions Constructions NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 11.1 Page No:191 Questions No:1

Jaclin

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.

The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x. 29, 32, 48, 50, x, x + 2, 72, 78, 84, 95.

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

In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary.

Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

Eleven bags of wheat flour, each marked 5 kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at random contains more than 5 kg of flour.

Construct an angle of 90° at the initial point of a given ray and justify the construction.

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