Mathematics · Group Theory
Let Z be the set of integers. Which of the following binary operations * on Z is associative?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1x * y = x2 - y2
- 2x * y = x ÷ y
- 3x * y = x + y✓
- 4x * y = x - y
Correct answer
x * y = x + y
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