I tried to take the survey... but the very first question stumped me.

But the three final questions stumped her and she gave uncertain, incorrect answers.

Both questions stumped all three of them.

The question has stumped even the most creative astrophysicists.

No question stumps him, he never breaks a sweat.

But even more fundamental questions stumped many: less than half knew that the Earth orbits the Sun annually.

And if a question stumped him, he could just say so: no one knows everything.

He looked perplexed, even annoyed, and it certainly appeared as if a question about what was wrong with the Rangers stumped him.

The question rather stumped the English girl.

The question stumped Steve Hamilton, who actually had an 8-3 record that season.