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If A=1, 2, ...

Question

If $A = {1, 2, 3, 4, 5}, B = {4, 5, 6, 7, 8}, C = {7, 8, 9, 10, 11}$ and $D = {10, 11, 12, 13, 14}$ . Find $B \cup C \cup D$ .

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Solution

$A = {1, 2, 3, 4, 5}$

$B = {4, 5, 6, 7, 8}$

$C = {7, 8, 9, 10, 11}$

$D = {10, 11, 12, 13, 14}$

$B \cup C \cup D$

${4, 5, 6, 7, 8} \cup {7, 8, 9, 10, 11} \cup {10, 11, 12, 13, 14}$

${4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}$ .

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(i) If A = {1,2,3,4,5},

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D= {10,11,12,13,14}. Find :

(i) $A \cup B$ (ii) $A \cup C$

(iii) $B \cup C$ (iv) $B \cup D$

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∆ A B C, A D

∠ A .

If A = {1,2,3,4,5},

B= {4,5,6,7,8} and C= {7,8,9,10,11}

Find :

(i) $A \cup B$ (ii) $A \cup C$

(iii) $B \cup C$

A = {1, 2, 3, 4, 5},

B = {4, 5, 6, 7, 8}

C = {8, 9, 10, 11, 12},

n [A \times (B^{'} \cup C^{'})^{'}] =

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