tmua.me papers

tmua.me Medium Set E Paper 2 · Q10

Paper 2Logic & proof

A collection contains at least two distinct points in a plane. Consider the statement:

Every point in the collection has another point in the collection less than 11 unit away, and another point in the collection more than 22 units away.

Which of the following is the logical negation of this statement? In each option, “other points” means other points in the collection.

AThere is a point for which every other point is at least 11 unit away and every other point is at most 22 units away.
BFor every point, either every other point is at least 11 unit away or every other point is at most 22 units away.
CThere is a point with another point at least 11 unit away and another point at most 22 units away.
DThere is a point for which either every other point is at least 11 unit away or every other point is at most 22 units away.
EThere is a point for which either every other point is more than 11 unit away or every other point is less than 22 units away.

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