Best short difficult riddles for teens

logicmathtricky

How can you divide a pizza into 8 equal slices using only 3 straight cuts?
Cut 1: Cut the pizza straight down the middle into two halves. Cut 2: Keeping the two halves in the place, cut the pizza straight down the middle at right angles to the first cut (you will be left with 4 equal quarters) Cut 3: Pile the 4 quarters on top of each other and cut through the middle of the pile. You will be left with 8 equal slices.
70.72 %
77 votes
cleansimple

They are twin sisters, same height; they work in the kitchen, arm in arm. Whatever is cooked, they always try it first.
Chopsticks.
70.36 %
76 votes
cleanlogicsimple

You measure my life in hours and I serve you by expiring. I'm quick when I'm thin and slow when I'm fat. The wind is my enemy.
A candle.
69.79 %
105 votes