23.02 Special number sets

Interactive practice questions

Is the following statement true or false?

$3$3$\in$∈$\left\{2,4,5,8\right\}${2,4,5,8}

True

False

Medium

< 1min

Is the following statement true or false?

$1$1$\in$∈$\left\{9,8,6,5,1\right\}${9,8,6,5,1}

Medium

< 1min

Is the following statement true or false?

$7$7$\notin$∉$\left\{6,5,4,2\right\}${6,5,4,2}

Medium

< 1min

List the elements in the set {$x$x$\mid$∣$x$x is a natural number less than $5$5}.

Medium

< 1min

Identify and use natural numbers and real numbers.

Identify and use integers (positive, negative and zero).

Identify and use rational and irrational numbers (e.g. π, sqrt(2) ).

Definition of sets e.g. A = {x: x is a natural number} B = {a, b, c, …}.