Answer:
What is the largest $ amount of change you can have in your pocket without having exact change for $1?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
How can you add eight 6s together so that the total adds up to 750?
A town has only two barbers. One of the barbers has a nice, tidy haircut, and the other has a shaggy, messy haircut. Which barber should you go to?
How do you blink twice without blinking twice?
I am the kind of an ant that's good at math. What am I?