Question

If A = { 1, 2, 3, 4 } and B = { 4, 5, 6, 7 } then A U B should be
A. (2, 3, 4, 5, 6,7}
B {1, 2, 3, 4, 5, 6, 7}
C{4}
D. { 1, 2, 3, 5, 6, 7}​
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Answer 1

Step-by-step explanation:

A={1, 2,3,4} B={4, 5,6,7}

A U B= {1, 2,3,4,5,6,7}

the correct option is B