"All grukes are toves, and all toves are outgrabes. So, there is at least a gruke that is an outgrabe." This argument is (N.B. "Grukes", "toves", and "outgrabes" are not words in English; they are nonsensical. Still, you should be in a position to answer this question.)
*NB This argument is invalid, although I intended it to be valid. So you get a mark if you answered one of these. But it is invalid since the conclusion entails the existence of something, while the premises do not. This argument is
(N.B. "Grukes", "toves", and "outgrabes" are not words in English; they are nonsensical. Still, you should be in a position to answer this question.)
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