Question

If A={1 , 2 , 3 , 4} and B={3 , 4 , 5 , 6 , 7} find (i) AUB (ii) AՈB (iii) A-B (iv) B-A ​

Answer 1

Answer:

AUB={1,2,3,4,5,6,7}

Answer 2

Answer:

(i) A ∪ B $=$ {$1,2,3,4,5,6,7$}

(ii) A ∩ B $=$ {$3,4$}

(iii) A$-$ B $=$ {$1,2$}

(iv) B $-$A $=$ {$5,6,7$}

Step-by-step explanation:

Union : The set containing all the items that lie in both sets A and B, or both sets A and B combined, is defined as the union of the two sets A and B.

Intersection : The set of all elements that are common to both A and B is the intersection of sets A and B.

Difference : The set of elements that belong to A but not to B is the difference between the sets A and B in this order.