Answer:
a. 8
Step-by-step explanation:
35+18=53
Since 11 students play the same sports, subtract 11 from the equation.
53-11=42
Therefore, 42 students play sports BUT since we are finding the number of students who don't play either of the sports given, we need to subtract the answer from the total amount of students.
50-42=8
Therefore, 8 students do not play sports.