The least common multiples of 4,10,12,15

Find the least common multiples of 4, 10, 12, 15

multiples of   4:   
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80

multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120

multiples of 12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120

multiples of 15: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150

The least common multiple of 4, 10, 12, and 15 is 60.

4 x 15 = 60
10 x 6 = 60
12 x 5 = 60
15 x 4 = 60

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )