17. Given a heap with n nodes, if we know that there are 40 leaves in this heap, what are the possible values you can take for n ? Ans: 18. Given a heap with n nodes, if we know that there are 60 nodes with height 1 in this heap, what are the possible values you can take for n ? Ans: 19. Given a heap with n nodes, if we know that there are 100 longest paths from the root, what is the smallest number for n ? Ans: 20. Given an array with 6 elements {x1,x2,x3,x4,x5,x6}, we already know that x1