MATH 102
Intro to 2.1 – Set Concepts Review
Mathematician:
Opener 01.08.16
Goal: Understand the three ways to write a set.
1) Write a description of the following set.
H = {3, 4, 5, 6,……..12}
2) Write the following set in set-builder notation.
B is the set of even natural numbers.
3) Write the following set in roster form.
The set of states whose name begins with the letter I.
Goal: Well-Defined vs Not Well-Defined
4) Circle which of the following sets is well defined.
A) The set of Snow White’s seven dwarfs.
B) The set of best reality TV shows.
Goal: Finite vs Infinite
5) Circle which of the following sets is infinite.
A) Odd natural numbers less than 13.
B) Even natural numbers.
Goal: Equal vs Equivalent
6) Decide whether the following sets are equal, equivalent, both, or neither.
A) {3, 4, 5, 6}
{lemon, orange, banana, apple}
B) {2, 4, 6, 8, 10}
The set of even Natural numbers less than 11.
Goal: Elements of a set
7) Which one of the following statements is FALSE?


A) apple  x x is the set of all fruit
B) a  {1,2,3, 4,5}
Goal: Cardinal number
8) For the set B  { x x  N and 2  x  7} , determine n(B).
Goal: Differentiate between the vocabulary in section 2.1.
The graph to the right shows iPod sales, in
millions, for the years 2003-2008. Use the
graph to determine each set in roster form.
12) The set of years in which the iPod sales
were more than 52 million.
13) The set of years in which iPod sales were
between 8 million and 60 million.