Dave found me standing by the bank. People also found vagueness in 'found' and 'by.' 2. This new cleaner will cut your cleaning time in half. You needed to identify both vagueness and ambiguity here. The 'cut the time in half' is vague.
Computers are dangerous.
This is both vague and ambiguous, and thus is a trick question. The vagueness is about what counts as dangerous within either of those two categories. If you said that a vague claim is one where it is uncertain what the speaker means, this is unacceptable because it is a definition which applies both to vagueness and ambiguity. As a result, this definition does not help to distinguish between the two terms. A dictionary is a book in which you look up words.