Or for integers m and n if one is odd and the other

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Unformatted text preview: m and n, if the sum m+n is even then m and n are both odd or m and n are both even. For integers m and n, if m and n are neither both odd nor both even, then the sum m+n is not even. Or For integers m and n, if one is odd and the other is even, then the sum m+n is odd. Some tempting but incorrect answers to B from a number of students (a) Not all isosceles triangles are equilateral. This is true, but not equivalent to (a). If you draw a Venn diagram, this says that the set of isosceles triangles is not contained in the set of equilateral triangles....
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