Determine the sample space of all the possible outcomes of choosing a card numbered 1,2,3,4 and a blue, green, and yellow marble. How many outcomes involve choosing a blue marble.

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 : )

C. a,b, and d are not numbers. they are expressions.