In a particular section of Class IX, 40 students were asked about the month of their birth and the following graph was prepared for the data so obtained :

Observe the bar graph given above and answer the following questions: ( i ) How many students were born in the month of November? (ii) in which month were the maximum number of students born ?

Which of the following are sets ? Justify your answer. The collection of all the months of a year beginning with the letter J.

Which of the following sets are finite or infinite ? The set of months of a year

A physics student studies rectilinear motion of a body and prepares the following graph. Which of the following conclusions best suits the above graph?

How many laws were given by mendel base on monohybrid cross ?

A family with a monthly income of Rs. 20,000 had planned the following expenditures per month unders various heads : Draw a bar graph for the data above.

The student of a class are made to stand in rows. If 3 students are extra in a row, there would be 1 row less. If 3 students are less in a row, there would be 2 rows more. Find the number of students in the class.

To suggest rule for inheritance of earlobe type. Procedure /Method : rarr The lowest part of the ear pinna called the earlobe, is closely attached to the side of the head, i.e., attached or not, i.e., free. rarr Observe the earlobes of all the students in the class. Prepare a list of students. Enter the data about the earlobes whether they are free or attached. rarr Find out about the earlobes of the parents of each student in the class. rarr Correlate earlobe type of each student with that of their parents. rarr In the column write F for free earlobe and A for attached earlobe. Answer the following questions on the basis of the collected data: Which expression of earlobe is observed more in number in your class?