As each of a group of business people arrives at a meeting, each shakes hands with all the other people present.
(A) Use mathematical induction to show that if n people come to the meeting then [n(n−1)]/2 handshakes occur.

A. is the answer in this question

The answer is : 63explanation 60 times 0.05360+363

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !