25% of the students in a school are girls and others are boys. Form an equation and draw a graph for this. By observing the graph, answer the following : (i) Find the number of boys, if the number of girls is 25. (ii) Find the number of girls, if the number of boys is 45. (iii) Take three different values for number of boys and find the number of girls. Similarly take three different values for number of girls and find the number of boys?

When Rupa was born, her father was 25 years old. Form an equation and draw a graph for this data. From the graph find (i) The age of the father when Rupa is 25 years old. (ii) Rupa’s age when her father is 40 years old.

The parking charges of a car in Hyderabad Railway station for first two hours is 50 and 10 for each subsequent hour. Write down an equation and draw the graph. Find the following charges from the graph (i) For three hours (ii) For six hours (iii) How many hours did Rekha park her car if she paid 80 as parking charges?

At an election a voter may vote for any number of candidates , not greater than the number to be elected. There are 10 candidates and 4 are to be elected. If a voter for atleast one candidates, then the number of ways in which he can vote is

In an election, the number of candidates is one greater than the persons to be elected. If a voter an vote in 254 ways, the number of candidates is a. 7 b. 10 c. 8 d. 6

Given below are the seats won by different political parties in the polling outcome of a state assembly elections : (i) Draw a bar graph to represent the polling results. (ii) Which political party won the maximum number of seats?

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 ?

In a railway reservation office two clerks are engaged in checking reservation form. On an average first clerk check 55% of the forms while second clerk check remaining. The first clerk has an error rate of 0.33 and second has an error rate 0.02. The reservation form is selected at random from the total number of forms checked during day, and is found to have an error. Find the probability of an event that it was checked by second clerk.

Draw the graph of the equation y - 2x = 4 and then answer the following. (i) Does the point (2, 8) lie on the line? Is (2, 8) a solution of the equation? Check by substituting (2, 8) in the equation. (ii) Does the point (4, 2) lie on the line? Is (4, 2) a solution of the equation? Check algebraically also. (iii) From the graph find three more solutions of the equation and also three more which are not solutions.

In which of the following situations, does the list of numbers involved is in the form of a GP? (i) Salary of Sharmila, when her salary is 5,00,000 for the first year and expected to receive yearly increase of 10%. Number of bricks needed to make each step, if the stair case has total 30 steps, provided that bottom step needs 100 bricks and each successive step needs 2 brick less than the previous step. Perimeter of the each triangle, when the mid points of sides of an equilateral triangle whose side is 24 cm are joined to form another triangle, whose mid points in turn are joined to form still another triangle and the process continues indefinitely.