Alison has a set of ten fridge magnets showing the integers from 0 to 9 inclusive. In how many different ways can she split the set into five pairs so that the sum of each pair is a multiple of 5?
A. 1 B. 2 C. 3 D. 4 E. 5
D
There are four different ways to split the magnets into pairs where the sum is a multiple of 5.

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This course encompasses a range of Geometry topics such as coordinate and spatial geometry, introductory trigonometry, angles, parallel lines, congruent and similar triangles, polygons, circles, the Pythagorean Theorem, and more. Emphasis will be placed on reinforcing Algebra skills and enhancing critical thinking through problem-solving in both mathematical and real-world contexts.

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