SOLUTION: Which of the following sets has only one subset. A) {Y, Z} B) {Y} C) {0} D) { }

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Question 700887: Which of the following sets has only
one subset.
A) {Y, Z}
B) {Y}
C) {0}
D) { }
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Every set has the empty set as a subset. So if a set has 1 element, like {0}, then it will have 2 subsets: itself and the empty set, which is denoted { }.

So if a set has only one subset, then this set must be the empty set. There is no other set that fits this description.

So the answer is D) { }