Trousers

In the class was 12 students. Nine students wearing trousers and turtleneck eight. How many students worn trousers with a turtleneck?

Result

a =  5
b =  8

Solution:

a=9+812=5a = 9+8-12 = 5
b=min(9,8)=8b = min(9,8) = 8



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