Question

if A ={1 ,3,9 ,11,13 } and B = {1 ,9 ,11 } then find A U B =? *
A U B = {1 ,3 ,9 , 11 , 13 }
A U B = { 1 , 3 , 4 , 11 }
A U B = { 1 , 3 , 7 , 9 11 }​

Answer 1

Answer:

option A is correct

A U B = {1,3,9,11,13}

Answer 2

Answer:

A U B = 1, 3, 9, 11, 13

This is the answer