KCET2009MathematicsMathematical Reasoning
Which one of the following is not true?
Options
- AInverse of an element in a group is unique.
- BFourth roots of unity form an additive abelian group.
- CCancellation laws hold in a group.
- DIdentity element in a group is unique.
Correct answer
B. Fourth roots of unity form an additive abelian group.
Step-by-step solution
Fourth roots of unity form an additive abelian group is not true because 0 is not exist.