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.

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.