Mathematics · Ring Theory
If 'a' and 'b' are elements in a commutative ring with unity R, then the linear equation ax = b:
- 1May have more than one solution✓
- 2Has more than one solution only if b = 0
- 3Has a solution only if 'a' is a unit
- 4Always has exactly one solution
Correct answer
May have more than one solution
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