Question

lf A= {1, 2, 3, 4}, B={3, 4, 5, 6}, C={5, 6, 7, 8 } and D={ 7, 8, 9, 10 10}; find $B \cup D$

Answer 1

concept : if two sets A and B are given, then union of set A and B is written as $A\cup B$ . This is the set of all distinct elements that are in Both A or B. see figure, Venn diagram shown, represents that the $\cup$ of any two sets will give all the members of the two sets together, and not replicating the common member twice.

here, A= {1, 2, 3, 4}, B={3, 4, 5, 6}, C={5, 6, 7, 8 } and D={ 7, 8, 9, 10}
so, $B\cup D=\{3,4,5,6\}\cup\{7,8,9,10\}$
therefore, $B\cup D=\{3,4,5,6,7,8,9,10\}$

Answer 2

Answer:

B U D = { 3,4,5,6,7,8,9,10 }

Step-by-step explanation:

Given B = { 3 , 4 , 5 , 6 }

D = { 7,8,9,10 }

B U D = { x : x € B or x € D }

= { 3,4,5,6 } U { 7,8,9,10 }

= { 3,4,5,6,7,8,9,10 }

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Answer 3

Answer:

B U D = { 3,4,5,6,7,8,9,10 }

Step-by-step explanation:

Given B = { 3 , 4 , 5 , 6 }

D = { 7,8,9,10 }

B U D = { x : x € B or x € D }

= { 3,4,5,6 } U { 7,8,9,10 }

= { 3,4,5,6,7,8,9,10 }

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