A pie chart gives the marks scored in an examination by a student in various subjects as measure of central angle: English `55^@`, Maths `90^@`, Science `80^@`, Hindi `70^@`, Social studies `65^@`. If the total marks obtained by the student were 360, then the score was least in which subject and how much?

A pie chart gives the marks scored in an examination by a student in various subjects as measure of central angle: English 55^@ , Maths 90^@ , Science 80^@ , Hindi 70^@ , Social studies 65^@ . If the total marks obtained by the student were 360, then find the marks obtained in each subject.

A pie chart gives the marks scored in an examination by a student in various subjects as measure of central angle: English 55^@ , Maths 90^@ , Science 80^@ , Hindi 70^@ , Social studies 65^@ . If the total marks obtained by the student were 360, how many more marks he got in Mathematics than in Science?

A pie diagram represents the number of valid votes obtained by four students who contested for school captain post. Values of central angle in pie chart for them are: Albert 100^@ , Raj 80^@ , Nashima 120^@ and Suja 60^@ . The total of valid votes polled was 720. By how many votes did the winner defeat the nearest contestant?

There are 68 students of 9th standard from Model High school, Nandpur. They have scored following marks out of 80, in written exam of mathematics.70, 50, 60, 66, 45, 46, 38, 30, 40, 47, 56,68, 80, 79, 39, 43, 57, 61, 51, 32, 42, 43,75, 43, 36, 37, 61, 71, 32, 40, 45, 32, 36,42, 43, 55, 56, 62, 66, 72, 73, 78, 36, 46,47, 52, 68, 78, 80, 49, 59, 69, 65, 35, 46,56, 57, 60, 36, 37, 45, 42, 70, 37, 45, 66,56, 47 By taking classes 30-40, 40-50, less than type cumulative frequency table. Using the table, answer the following questions How manystudents, have scored marks less than 80?