Prepare a frequency table of the following scores obtained by 50 students in a test: 42, 51, 21, 42, 37, 37, 42, 49, 38, 52 7, 33, 17, 44, 39, 7, 14, 27, 39, 42 42, 62, 37, 39, 67, 51, 53, 53, 59, 41 29, 38, 27, 31, 54, 19, 53, 51, 22, 61 42, 39, 59, 47, 33, 34, 16, 37, 57, 43

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?

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 60?

Two sections of class IX having 27 students in each section appeared for Mathematics olympiad. The marks obtained by them are shown below. 46, 31, 74, 68, 42, 54, 14, 61, 48, 37, 26, 8, 64, 57, 93, 72, 53, 59, 38, 16, 88, 56, 46, 66, 45, 61, 54, 27, 27, 44, 63, 58, 43, 81, 64, 36, 49, 50, 76, 38, 47, 77, 62, 53, 40, 71, 60, 45, 42, 34, 46, 40, 59, 42 One student is selected at random. Find the probability that selected student is having marks more than 49.