Database-Management-System
October 5, 2023GATE 2008
October 5, 2023Engineering-Mathematics
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Question 1498
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Let ({a,b},*) be a semigroup, where a*a=b.
(A) a*b=b*a
(B) b*b=b
Choose the most appropriate answer from the options given below:
(A) a*b=b*a
(B) b*b=b
Choose the most appropriate answer from the options given below:
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Only true
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Only true
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Both (A) and (B) true
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Neither (A) nor (B) true
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Correct Answer: C