Question 54
Back to Exercise
How many subsets of {1, 2, …, 10} contain 1 but not 2?
- A 512
- B 1,024
- C 128
- D 256 Correct
Correct Answer: Option D
1 is in, 2 is out; the other 8 elements are free
2⁸ = 256
Answer: 256
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