Author's Note: sorry this took so long. As Sherlock and the Doctor are both geniuses (yes, "geniuses" is the correct plural of "genius", though "genii" is correct too, depending on the context), it took me a while to come up with questions they couldn't answer. But now I've got it. After this, it's one more chapter and then an epilogue, and that's it. Writing this story has been great. Thanks again to Violet Verner for suggesting the idea for this story.

And now, find out how the Master tries to make fools of the Doctor and Sherlock.

"Question time. Remember, the fate of the universe is at stake. Prove to me that you are geniuses." the Master told the Doctor and Sherlock.

"Easy." they said simultaneously.

"Oh, but is it?" He laughed maniacally. "Now then, all you have to do is each answer at least one question correctly. You only need one. One. Got that?"

"How many questions will we be asked?"

"WRONG!" the Master shouted. He laughed again. "We haven't even started yet, and you're already wrong. All you had to do is say 'yes'. Come on!" He laughed maniacally. "You two crack me up. Okay, let's begin." He turned to Sherlock.

•••

"Describe the universe. I don't need the whole history, just give me a simple overview."

"Technically, speaking that's not a question, just a command." The Master glared.

"Just answer it. You're lucky I didn't count that as your answer." Sherlock said nothing. "Come on, then."

"I'm thinking." Sherlock closed his eyes and visited his mind palace. He looked for the room labeled 'solar system'. It was empty. No, wait, there was something there. Sherlock walked over and opened the file. John had told Sherlock about the solar system, and Sherlock had said he would delete the information because it was irrelevant. And that was it.

"Sherlock, I'm waiting."

"I... I... I don't know." Sherlock choked out, swallowing his pride.

•••

"You had one question! One question! A simple question! I could have answered that easily! And you messed it up!"

"Don't be so quick to judge, Doctor. I've got a question for you, too. What is time?"

"Well... time isn't what most people think it is."

"Go on."

"It's complicated."

"Go on."

"Very complicated."

"Just answer the question."

"People assume time is a strict progression of cause to effect, but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly, timey-wimey... stuff."

"And you expect me to call that a valid answer?" The Doctor cringed.

•••

"Sherlock, your turn again: what is Lestrade's first name?"

"What can that possibly have to do with my intelligence?"

"Just answer the question."

"Um... Detective? He is called 'Detective Inspector Lestrade'."

"Wrong!" The Master laughed. "Ha! You two are idiots!" He turned to the Doctor.

•••

"Now then, maybe you can answer this question correctly. Name the first question—the oldest question in the universe hidden in plain sight."

"What?"

"The question that must never be answered."

"What? What question?"

"Sorry, wrong answer. Moving on..." He turned to Sherlock.

•••

"Sherlock." Before the Master could say any more, Sherlock interrupted.

"Please don't make it another astronomy question! I know lots of things besides astronomy!"

"Fine. Let's go with..." He looked at a list in his hand titled 'Sherlock Holmes - his limits'. "Philosophy." Sherlock groaned. "According to the famous philosopher Descartes, if you think, you..."

"I don't know, um... are a good person? Contribute to society? Some stupid 'meaning of life' rubbish, no doubt."

"Is that your final answer?"

"Well, I don't have anything better. Philosophy doesn't matter to me, either."

"Well, you're wrong."

"Look at you two!" Moriarty laughed. "Such a sorry lot! I can just see your pride deflating. One wrong answer and - pop! All the pride goes away like air in a balloon. And that's what you are, airheads."

"Say that again!" Molly said, glaring at Moriarty with a look that said, "I dare you!" Moriarty felt his face, which was still stinging from the previous slaps. He said nothing. The Master resumed his questioning.

•••

"Doctor, I've got another question for you. How do you fix the chameleon circuit?"

"Well if I knew that, it wouldn't still be broken, would it?"

"So you don't know. You really aren't helping your case here, either of you." He paused. "I gave you each three chances! Three! I was being generous! And you messed up every one!" He turned to John. "So you see, they aren't geniuses after all. Null and void," he said, about to rip the contract up.

"Don't you dare. Sherlock is a genius. And a hero."

"Don't make people into heroes, John. They don't exist. And if they did, I wouldn't be one of them." Sherlock sighed, hanging his head in shame at his lack of knowledge.

"You're just going to take that?" The Doctor asked incredulously. Sherlock thought for a minute. He turned to the Master.