T2W2 TS Q25 – Selective High School

“Whoever solved the riddle must have been both witty and lucky.”

If this is true, which one of these sentences must also be true?

If Phillip was both witty and lucky, he must have solved the riddle. If Phillip did not solve the riddle, he cannot be witty. If Phillip did not solve the riddle, he cannot be lucky. If Phillip was not lucky, he cannot have solved the riddle.

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If this is true, which one of these sentences must also be true?