In a survey of 100 students the following observations were made:41 students read Punch magazine,29 students read Time magazines,26 students read Ovation magazine,15 students read Punch and Time magazines,8 students read Time and Ovation magazines,19 students read Punch and Ovation magazines and 5 students read all the three magazines. Find the number of students among the 100 that did not read any of the three magazines. How many read one of the three magazines​