if events a and b are mutually exclusive are they also collectively exhaustive
Collectively exhaustive events One example of an event that is both collectively exhaustive and mutually exclusive is tossing a coin. The outcome must be either heads or tails, or p (heads or tails) = 1, so the outcomes are collectively exhaustive. When heads occurs, tails can't occur, or p (heads and tails) = 0, so the outcomes are also mutually exclusive.
Concurring opinion In some courts, such as the Supreme Court of the United States, the majority opinion may be broken down into numbered or lettered parts, and then concurring justices may state that they join some parts of the majority opinion, but not others, for the reasons given in their concurring opinion.[1] In other courts, such as the Supreme Court of California, the same justice may write a majority opinion and a separate concurring opinion to express additional reasons in support of the judgment (which are joined only by a minority).[2]