A survey of 850 students in a university yields that 680 students like music and 215 like dance. What is the least number of students who like both music and dance?

A survey of 850 students in a university yields that 680 students like

1.	A survey of 850 students in a university yields that 680 students like music and 215 like dance. What is the least number of students who like both music and dance?
A.	40
B.	45
C.	50
D.	55
Answer» C. 50

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