Question 1

Az  {x|x $\in$ N, $ 3 \leq x <5  $}  halmaz elemei

Accepted Answer

{3,4}

Answer

{4}

Answer

{4,5}

Answer

{3,4,5}

Question 2

Az M = { 0, 2, 4, 6, 8 } halmaz elemeinek száma

Accepted Answer

5

Answer

3

Answer

6

Answer

4

Question 3

Ha A = {1, 2, 3} és B = {3, 4, 5} akkor $A \cup B $ egyenlő

Accepted Answer

{1, 2, 3, 4, 5}

Answer

{1, 2, 3}

Answer

{3}

Answer

{1, 2}

Question 4

Ha az A halmaz 21 elemet tartalmaz, a B halmaz 28 elemet, valamint az $A \cap B$ halmaznak 15 eleme van, akkor az $A \cup B$ halmaz elemeinek száma

Accepted Answer

34

Answer

49

Answer

15

Answer

64

Question 5

{5, 6} $\subset$ {x | x $\in N $, $1 < 2 x +1 < 15$}

Accepted Answer

igaz

Answer

hamis

Question 6

$2 \in $ {1, 4, 5}

Accepted Answer

hamis

Answer

igaz

Question 7

{1, 2, 5} $\subset$ {0, 1, 2, 5, 7}

Accepted Answer

igaz

Answer

hamis

Question 8

A = {a, b}, B = {b, c} mennyi lesz ($A\cup B$) \ ($A\cap B$)

Accepted Answer

{a, c}

Answer

{a, b, c}

Answer

{a}

Answer

{b}

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