How many subsets does the set {a, b, c} have?
Answer and explanation
Correct answer: C. 8
- Step 1: A set with n elements has 2 to the power n subsets. Step 2. 2 to the power 3 = 8, including the empty set and the set itself. Answer: 8. Why not the others: 3 is the number of elements, 6 leaves out the empty set and the whole set, and 9 is 3 squared instead of 2 to the power 3.
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