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Number of Elements in Cartesian Product

Let A= a,e,i,...

Question

Let $A = {a, e, i, o, u}$ and $B = {a, i, u}$ . Show that $A \cup B = A$

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Solution

Given: $A = {a, e, i, o, u}$ and $B = {a, i, u}$
$∴ A \cup B = {a, e, i, o, u} \cup {a, i, u}$
$= {a, e, i, o, u}$
$A \cup B = A$
Hence proved.

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Number of Elements in Cartesian Product

Standard X Mathematics

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