Does a cone have 1 or 2 faces? Students should realize thata cone has only one face, and you need more than one face to form an edge. Ask: Does a cone have any vertices? Lead students to see that a cone has no edges, but the point where the surface of the cone ends is called...
If a workAcan be done inmways and another workBcan be done innways, then the number of ways in which bothAandBcan be done ism×nways. If the number of elements in the domain is greater than the number of elements in the co-domain, then there does not exist any one-on...