Asked by kapil

A cube has 8 vertices. For each pair of distinct vertices, we connect them up with a line segment. There are (8 2 )=28 such line segments. For each of these 28 line segments, we mark the midpoint. How many distinct points have been marked as the midpoints?
Answered by Himadri Mukherjee
19
Answered by aaron
which of the numbers below is the sum of four consecutive whole numbers
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