Question #895

Question about Choice B

Started by hassay18 · started 2024-10-22 21:24 · last activity 2024-10-23 15:42 · 1 reply

Hello! I was wondering why choice B is wrong? While it does say that Tropical Fish and Exotic Birds, it also says "No pet stores that sell TF and EB sell gerbils" which is correct. Any store that sells both TF and EB do not sell gerbils. So then why is B wrong. Please kindly give a simple explanation. I get confused reading the big convoluted answers you guys sometimes give. Thanks.

Replies

  1. Emil-Kunkin · 2024-10-23 15:42

    The rule tells us that if a pet store sells fish but not birds, then it must sell gerbils. That is if we have fish without birds, we know we have gerbils. This tells us nothing about B. B is about stores that sell both birds and fish, a completely different set of stores than our rule was about.

Sign in to reply.