Two elves guard two doors, and one door leads to Santa's workshop. One elf always tells the truth and the other always lies, but you do not know which is which. You ask either elf, "Which door would the other elf say leads to the workshop?" The elf points to Door A. Which door really leads to the workshop?

What is the maximum number of pieces from 3 straight cuts across a round cake, if each cut crosses all previous cuts inside the cake?

Four stockings hang in a row: red, green, blue and gold. Red is not on either end. Green is somewhere to the left of red. Blue is on the far right. Gold is next to green and is not on either end. Which stocking is on the far left?

A cube is painted on all sides and cut into 27 equal smaller cubes. How many small cubes have paint on exactly one face?

Four guests sit in a row of four chairs. Dev sits in the far-right chair. Cora sits right next to Dev. Ben sits somewhere to the left of Cora. Ana does not sit at either end. Who sits in the far-left chair?

Maya, Noah and Zoe each bring one dish: pie, rolls or salad. Maya did not bring pie. Noah brought neither pie nor salad. What did Zoe bring?

You have a 5-litre jug and a 3-litre jug. How can you measure exactly 4 litres?

A bag has red, blue, and green balls. How many must you take to guarantee two of the same colour?

You face north. Turn right, turn around, then turn left. Which way are you facing?