Discrete Math Question:

Which of the following two sets are disjoint?
a) {1, 3, 5} and {1, 3, 6}
b) {1, 2, 3} and {1, 2, 3}
c) {1, 3, 5} and {2, 3, 4}
d) {1, 3, 5} and {2, 4, 6}

d) {1, 3, 5} and {2, 4, 6}

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The union of the sets {1, 2, 5} and {1, 2, 6} is the set _______________. a) {1, 2, 6, 1} b) {1, 2, 5, 6} c) {1, 2, 1, 2} d) {1, 5, 6, 3}	Two sets are called disjoint if there _____________ is the empty set. a) Union b) Difference c) Intersection d) Complement