In a class of 170 students, the following enrollments are known: 78 study math, 60 study chemistry, 64 study biology, 19 study math and biology, 22 study math and chemistry, 18 study chemistry and biology and 11 study all three subjects. How many of these students study none of the three subjects?

# TJ Prep Problems

TJ test prep practice problems for our students and readers. The problems provide a very small sampling of what Optimal TJ Prep students work with.