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If P(A ∩B)= 1,then A and B must be collectively exhaustive.
Competence
The ability to do something successfully or efficiently, involving skills and knowledge.
Confidence
A feeling of self-assurance arising from an appreciation of one’s own abilities or qualities.
Mediocrity
The quality of being average or moderate in quality, not outstanding or poor.
Sincerity
The quality of being free from pretense, deceit, or hypocrisy; genuine honesty.
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