There are 20 students taking Econ and 12 students taking Chem. If there are 8 students taking both Econ and Chem, find the total number of students taking Econ or Chem in the group.

In a group of 210 students, 120 students study Math, 150 students study Physics, and 110 students study Chemistry. If 30 students study all three subjects, 40 students study only Math and Physics, 50 students study only Physics and Chemistry, and 25 students study only Math and Chemistry, how many students do not study any one of the subject? Options 5 15 10 20

There are 140 students in the seventh grade, and 5% are in the Environmental Club. How many students are in the Environmental Club?

In a survey involving 60 students, it was found that 26 like Chemistry, 24 like Physics, 18 like Mathematics, 12 both Chemistry and Physics, 10 Chemistry and Mathematics, 10 Physics and Mathematics and 15 none of the three subjects. Find the number of students that like all the three subjects.

In a class of 150 students, 50 students passed in mathematics, 40 students failed only in chemistry and 20 students failed in both the subjects . How many students passed exactly in one subject?

In a class of 40 students, 20 have chosen Mathematics, 15 have chosen mathematics but not biology. If every student has chosen either mathematics or biology or both, the number of students chose biology but not mathematics