Given 'No birds are reptiles' and 'All reptiles are cold-blooded', which conclusion is valid?
Q1. Given 'No birds are reptiles' and 'All reptiles are cold-blooded', which conclusion is valid?
Answer: Some cold-blooded are not birds
Explanation: D follows via universal premises. B assumes false particular conclusion. USAT, HAT and MDCAT analytical sections repeat this pattern.