2 comments

  • Monday, Jan 15 2018

    Thank you!

    0
  • Monday, Jan 15 2018

    I think so.

    If sufficiency is satisfied (i.e. A), then B will necessarily follow.

    If sufficiency is not (i.e., otherwise), then /B will follow.

    A -> B

    /A -> /B

    Contrapose either one, you get a biconditional

    3

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