It is given that $\xi=\{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15\}$, $A=\{x:x\text{ is even}\}$ and \

Question

It is given that $\xi=\{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15\}$, $A=\{x:x\text{ is even}\}$ and $B=\{x:x\text{ is a factor of }15\}$. List the elements of $A\cap B$. List the elements of $(A\cup B)'$. Find $n(A\cup B)$.

Accepted Answer

(a) $\{\}$; (b) $\{7,9,11,13\}$; (c) $11$.

Sec 3/4 E Math T12-Q13 - Listing elements and applying set notation

Sec 3/4 E Math T12-Q13 - Listing elements and applying set notation

Solution:

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