Problem: There are 7 Falls and 6 caves located in Samar Island. In how many ways can Cristine go to these spots
31.) there are no restrictions?
32.) spots of the same type must be visited in succession
33.) they must be visited alternately?
34) only 3 of the falls and 2 of the caves must be visited.
_35.) Only 4 of the falls and 3 of the caves must be visited.​