The number of commutative binary operations on a set containing 2 elements is:
The number of commutative binary operations on a set containing 2 elements is:
- A. 16
- B. 8
- C. 4
- D. 2
Answer: B) 8
Explanation: The number of commutative binary operations on a set of n elements is n^(n(n+1)/2). For n=2, it is 2^(2×3/2) = 2³ = 8.
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