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- Multiple ChoicePlease save your changes before editing any questions.
The meaning of the letter Z in set theory is

Natural Number

Integer Number

Irrational Number

Rational Number

- Multiple ChoicePlease save your changes before editing any questions.
The meaning of the letter N in set theory is

Natural Number

Rational Number

Real Number

Irrational Number

- Multiple ChoicePlease save your changes before editing any questions.
An example of an irrational number is

$\pi$

2

$\frac{5}{2}$

-6

- Multiple ChoicePlease save your changes before editing any questions.
An example of an integer number is

0

$\pi$

$\sqrt{2}$

$\frac{5}{2}$

- Multiple ChoicePlease save your changes before editing any questions.
A = {1,2} and B = {2,3} The union of set A and B is:

$A\cup B$ ={1,3}

$A\cup B$ ={1,2,3}

$A\cup B$ ={2,3}

$A\cup B$ ={1}

- Multiple ChoicePlease save your changes before editing any questions.
A = {1,2} and B = {2,3} The intersection of set A and B is:

$A\cap B=\left\{2\right\}$

$A\cap B=\left\{1,2,3\right\}$

$A\cap B=\left\{1\right\}$

$A\cap B=\left\{3\right\}$