Question #1848

QUESTION 17

Started by timothy · started 2017-11-16 03:22 · last activity 2019-06-09 14:43 · 2 replies

The video explanation is wrong because both A and E has Z and we know from the contrapositive of rule 3 that z-> not P -> not S There fore if we use the same rule for answer E then the same rule should apply for answer choice A.

Replies

  1. Mehran · 2017-11-29 02:01

    @timothy this video has been updated. Please let us know if you have any other questions.

  2. Tony · 2019-06-09 14:43

    Is there another way to arrive at the answer without referring to the previous questions, assuming I wasn't able to answer the previous questions correctly?

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