Contrapositive and/or question

Aks_ZenMasterAks_ZenMaster Live Member
in Logical Reasoning 119 karma

Hi all,

Been stuck on one thing, if my stimulus says "If A then B and C", the contrapositive will be ~B or ~C then ~A. So can a must be true answer choice be "if ~B then ~A" or is that not valid? Also, can "if ~B, C then ~A" be a must be true answer choice or no?

Thank you!

Comments

  • BeietrBeietr Free Trial Member
    2 karma

    just remember MCAT/LSAT logic wants the contrapositive or any of its simpler consequences, not versions with added baggage.

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