Of the 145 students who took a mathematics exam, 80 correctly answered the first question, 81 correctly answered the second question, and 49 correctly answered both questions. How many students did not answer either of the two questions correctly?
the Kids that answered correct in any of questions 1 and 2 got at least one right so subtract the highest number which is 81 students by all the general amount of them, 145 that’s 64.
