si lanzo 2 dados cual es la probabilidad de obtener ambos resultados iguales y que ambos sean numeros pares

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 : )

So confused right here i need it to be more clearer

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test