Question

If set A = { 2, 4, 6, 8, 10} and set B = { 1, 3, 5}, then A and B are __________.

• A. equal sets
• B. equivalent sets
• C. disjoint sets
• D. None of the above

Answer 1

The correct option is C disjoint sets

A = { 2, 4, 6, 8, 10}
B = { 1, 3, 5}
$A\cap B$ = { 2, 4, 6, 8, 10} $\cap$ { 1, 3, 5}
$A\cap B$ = { }
There are no elements which are both in set A and set B.
Hence, A and B are disjoint sets.