1.

How do you represent “All dogs have tails”?

A. ۷x: dog(x) àhastail(x)
B. ۷x: dog(x) àhastail(y)
C. ۷x: dog(y) àhastail(x)
D. ۷x: dog(x) àhasàtail(x)
Answer» B. ۷x: dog(x) àhastail(y)


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