Sets

If A={6,8,10,12} then 5 ∈ A

• True

• False

Set  Q  contains the letters in the word  SISTER .
 Which of the following is set  Q ?

• Q = { S, T, R }
• Q = { I, E }
• Q = { S, I, S, T, E, R }
• Q = { S, I, T, E, R }

{ x | x is a Marymount Student}

• Roster Form

• Universal Form

• Set Builder Notation

• Equivalent Inequality

P={a, b, c, d, e, f, g, h, i, j, k, l,m}

• Roster Form

• Universal Form

• Set Builder Notation

• Equivalent Inequalities

W is odd numbers less than 20

• {1,3,5,7,9,11,13,15,17,19}

• {2,4,6,8,10,12,14,16,18}

• {3,5,7,9,11,13,15,17}

• {4,6,8,10,12,14}

P={2,3,5,7,11,13,17,19}

8 Ɇ P

• true

• false

Write in set builder notation. {-3, -2, -1, 0, 1}

• { x∈ ℤ | -3 < x < 1}

• { x∈ ℤ | -3 < x < 1}

• { x∈ ℝ | -3 < x < 1}

• { x∈ ℝ | -3 < x < 1}

• [ -3,1]

Which method is used to designate the set { x | x ∈ N and x > 4 } ?

• Roster Method

• Descriptive Method

• Set-builder Notation

 $M$  is the set of all prime numbers divisible by 3. Describe  $M$   by listing its members!

•  $M=\left\{3,6,9,12,\cdots\right\}$  

•  $M=\left\{2,3\right\}$  

•  $M=\left\{3\right\}$  

•  $M=\left\{3,5,7,9\right\}$  

Each object in a set is called

• Element

• roster

• intersection

• union