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Question

An element a in a monoid is called an idempotent if ______________

a.

a⁻¹=a*a⁻¹

b.

a*a²=a

c.

a²=a*a=a

d.

a³=a*a

Posted under Discrete Mathematics

Answer: (c).a²=a*a=a

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Q. An element a in a monoid is called an idempotent if ______________

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