Use set notation to represent each of the following a) The set of the months of the year whose name contains the letter N.
b) The set of hexadecimal characters.
c) The set of letters in the word taradiddle

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.