Question

AUB={10,20,30,40,50}andB={10,40}then which of the following represents set A?​

Answer 1

Answer:

set A=AUB

since ,

A can be={10,20,30,40,50}

where B={10,40}

....

....

Answer 2

Answer:

A = {20,30,50}

Step-by-step explanation:

B = {10, 40}

A∪B = {10, 20, 30 , 40, 50}

A∪B = A + B - A∩B  (Addition theorem)

Assuming A∩B = 0

A = {10, 20, 30 , 40, 50} - {10, 40}

A = {20,30,50}