• Pre algebra
  • Sets
  • Set deffinition and set representation

Set deffinition and set representation

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  • Question 1:
    1 pts
    $\{1,2,3\}=\{3,2,1\}=\{1,2,2,3,3,3\}$
  • Question 2:
    1 pts
    If $B=\{1,2,3\}$ than $1\in B$ and $2\not \in B.$
  • Question 3:
    1 pts
    The cardinality of the set $A=\{1,2,3,5,8,9\}$ is

    2

    4

    5

    6

  • Question 4:
    2 pts
    $\mid \varnothing \mid$ is
  • Question 5:
    2 pts
    Set $A=\{1,2,3,5,8,9\}$ is equivalent to set $B=\{2,3,8,11,12,13\}$.
  • Question 6:
    2 pts
    Sets $A=\{2,4,6,8\}$ and $B=\{1,2,6,8\}$ are
    equal, but not equivalent
    not equal, but equivalent
  • Question 7:
    2 pts
    List the elements of the set $D=\{x\in\mathbb{Z}^{+}\mid x<4\}.$
    $D=$
  • Question 8:
    3 pts
    The cardinality od set $A=\{\varnothing, \{a\}, \{a,b\}\}$ is

    3

    2

    1

    0

  • Question 9:
    3 pts
    List the elements of the set $A=\{n\in\mathbb{N}\mid \mbox{n is prime and}\ n\leq10\}.$
    $A=\{2,3,5,7\}$
    $A=\{0,2,3,5,7\}$
    $A=\{1,3,5,7,9\}$
    $A=\{2,4,6,8,10\}$
  • Question 10:
    3 pts
    List the elements of the set $A=\{x\in\mathbb{Z}\mid |x|<4\}.$
    $A=\{0,1,2,3\}$
    $A=\{0,1,2,3,4\}$
    $A=\{-4,-3,-2,-1,0,1,2,3,4\}$
    $A=\{-3, -2,-1,0, 1,2,3\}$
  • Question 11:
    3 pts
    The universal set is $U=\{5,6,7,8,9,10,11,12\}.$ List the elements of the set $B=\{x\mid x \mbox{ is a factor of}\ 60\}.$
    $B=\{5,6,8,10,12\}$
    $B=\{5,6,10,12\}$
    $B=\{6,8,10,12\}$
    $B=\{5,7,8,9,11\}$