What's the negation of “At least three of the sentence are false”? Following with the question I asked before
What's the negation of "One of the sentence is false"?
The negation of “At least three of the sentence are false” would be "any, one or two of the sentence is/are false"?

No! The negation of the sentence "At least one of the three sentences is false" is "All three of the sentences are true" or, equivalently "None of the sentences are false".
