If A -1-2 and B -3-4- then A - B -A- B- A - BC- 1-2-3-4D- B - A

The correct options are C {1, 2, 3, 4} D B∪ AGiven nbsp;A={1, 2} and B={3, 4}. ⇒ A∪ B= {1,2,3,4} Also, the commutative property of union of sets says that n ...

If A =1,2 and...

Question

If $A = {1, 2}$ and $B = {3, 4},$ then $A \cup B$ = ___.

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A \cap B

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{1, 2, 3, 4}

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B \cup A

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Solution

The correct options are
C ${1, 2, 3, 4}$
D $B \cup A$
Given $A = {1, 2}$ and $B = {3, 4} .$
$\Rightarrow A \cup B = {1, 2, 3, 4}$
Also, the commutative property of union of sets says that
$A \cup B = B \cup A .$

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Commutative Property

Standard IX Mathematics

If A={1,2} and B={3,4}, then A∪B = ___.

The correct options are C {1,2,3,4} D B∪AGiven A={1,2} and B={3,4}. ⇒A∪B={1,2,3,4} Also, the commutative property of union of sets says that A∪B=B∪A.

If $A = {1, 2}$ and $B = {3, 4},$ then $A \cup B$ = ___.

The correct options are
C ${1, 2, 3, 4}$
D $B \cup A$
Given $A = {1, 2}$ and $B = {3, 4} .$
$\Rightarrow A \cup B = {1, 2, 3, 4}$
Also, the commutative property of union of sets says that
$A \cup B = B \cup A .$