Question

Given $A=\{a,b,c,d,e,f,g,h\}$ and $B=\{a,e,i,o,u\}$ find $A-B$.

• A. $\{b,c,d,f,g,h\}$
• B. $\{a,b,c,d,e,f\}$
• C. $\{f,h,g,b,a,j\}$
• D. $\{a,c,f,d,s,h\}$

Answer 1

The correct option is A $\{b,c,d,f,g,h\}$

We know that if the two sets $A$ and $B$ are given then their difference $A-B$ means elements of $A$ which are not the elements of $B$.

Here, the given sets are $A=${$a,b,c,d,e,f,g,h$} and $B=${$a,e,i,o,u$}

The elements in only $A$ are {$b,c,d,f,g,h$}, therefore, $A-B=${$b,c,d,f,g,h$}

Hence, $A-B=${$b,c,d,f,g,h$}.