If A = {3, 6, 9, 12, 15, 18, 21}, B = {4, 8, | vedclass

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(A) The difference of two sets $C$ and $D$,denoted by $C - D$,is the set of all elements that are in $C$ but not in $D$.Given $C = \{2, 4, 6, 8, 10, 1

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$\{2, 4, 6, 8, 12, 14, 16\}$

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(A) The difference of two sets $C$ and $D$,denoted by $C - D$,is the set of all elements that are in $C$ but not in $D$.Given $C = \{2, 4, 6, 8, 10, 12, 14, 16\}$ and $D = \{5, 10, 15, 20\}$.We remove the elements of $D$ that are present in $C$.The common element between $C$ and $D$ is $\{10\}$.Therefore,$C - D = \{2, 4, 6, 8, 10, 12, 14, 16\} - \{5, 10, 15, 20\} = \{2, 4, 6, 8, 12, 14, 16\}$.

If $A = \{3, 6, 9, 12, 15, 18, 21\}, B = \{4, 8, 12, 16, 20\}, C = \{2, 4, 6, 8, 10, 12, 14, 16\}, D = \{5, 10, 15, 20\};$ find $C - D$.

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