Brain Teasers
Three switches control one bulb upstairs. One trip upstairs only—how do you identify each switch?
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Five people sit in a row. Two always lie. Who sits in the middle?
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Four switches are outside. One controls a sealed room’s fan. Enter only once—how do you identify it?
You may flip two switches once. How can you identify all three bulbs?
Three switches are outside. Which one powers the warm bulb inside?
Three jars are mislabeled. Pick one fruit to label every jar correctly. Which jar do you choose?
A person enters a room and presses a button. Moments later, everyone applauds. Why?
A bus driver goes the wrong way on a one-way street. Why isn’t he stopped?
A clock strikes six in 5 seconds. How long to strike twelve?
A man lives on the 20th floor. Why does he walk down but ride up?
Why did the lowercase g refuse to join the alphabet parade?
I wait beside a window but never look outside. I am pulled down to begin and pushed up to vanish. I gather dust while keeping eyes from meeting. What am I?
What can make a sentence sound different without changing a single word?
Which enchanted guide always points to the place you have never seen?
Which witness lied about the murder, though every spoken sentence was true?
I travel from room to room without feet, carry no luggage, and leave nothing behind. You open me to let me in, then close me to keep me out. What am I?
I travel with your keys but open no lock. I hold your name, yet I cannot speak. I circle your finger only when I am not on your keys. What am I?
I stand beside your plate but never eat. I wear a coat yet have no arms. I may hold a storm, though I never make it rain. What am I?
A cozy chair, shelves full of books, and a sleeping cat… this bookshop seems perfectly ordinary. But one detail is impossible. Look carefully and tell us what it is!
Three suspects touched one object. Who lied about touching it last?
I hug your papers without tape or glue. I bend my two arms back to let go. What am I?
