2. How long does Milo calculate it will take to finish the tasks assigned by the faceless man?
(a) 837 minutes.
(b) 837 years.
(c) 37 minutes.
(d) 87 years.

3. What is the one thing the Mathemagician says is easy, though hardly worthwhile?
(a) Being write.
(b) Being wrong.
(c) Being alone.
(d) Being with friends.

4. What does the magic staff given to Milo by the Mathemagician look like?
(a) A pencil.
(b) A cane.
(c) A box.
(d) A stick.

5. What is the name of the faceless man?
(a) Tedious Trivial.
(b) Trivial Tedious.
(c) Terrible Trivium.
(d) Terrible Tedium.

6. How do Rhyme and Reason suggest they get out of the Castle in the Air?
(a) That Tock should fly them out.
(b) That Milo should fly them out.
(c) That they should all jump.
(d) That Humbug should fly them out.

7. What saves Milo, Tock and Humbug from the man at the bottom of the stairs in the Castle of the Air?
(a) Laughter.
(b) King Azaz.
(c) Rhyme and Reason.
(d) A demon.

8. What does the Mathemagician show Milo when he asks to see the biggest number there is?
(a) A pencil.
(b) A number one which can be added to anything.
(c) A huge number three.
(d) 999,999,999,999.

9. What is it that stops the demons from chasing Milo, Tock, Humbug, Rhyme and Reason in Chapter 19?
(a) King Azaz and the Mathemagician.
(b) Everyone Milo had met along the way.
(c) Dr. Dissonance and Dynne.
(d) The armies of Wisdom.

10. What clue does Milo have that the demons are trying to chop down the stairway to the Castle in the Air?
(a) The shaking of the room.
(b) The screams of Humbug.
(c) The sound of chopping.
(d) The sound of the chopping and shaking of the room.

11. Where does Milo learn the biggest, tallest, shortest, smallest, most and least of everything is kept?
(a) In the Mathemagician's hat.
(b) The Island of Numbers.
(c) The land of Infinity.
(d) Under the box.

12. What is on the helmet Milo, Tock and Humbug wear into the numbers mine?
(a) A number five.
(b) A bird.
(c) A candle.
(d) A flashlight.

13. What does Milo use to see how the insecurity demon really appears?
(a) A sword.
(b) Glasses.
(c) A bubble.
(d) A telescope.

14. What kinds of tools are in the Mathemagician's workshop?
(a) Buckets for weighing.
(b) Hammers for adding.
(c) Tools for measuring.
(d) Saws for dividing.

15. How does Milo come to know what's happened to make the Silent Valley?
(a) Milo guesses.
(b) Someone whispers it to Milo.
(c) Someone writes it on the blackboard.
(d) Someone uses sign language to explain it.