81 x 9 = 801. What must you do to make the this equation true?
2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?
Distances from you to certain cities are written below. BERLIN 200 miles PARIS 300 miles ROME 400 milesAMSTERDAM 300 miles CARDIFF ??? miles How far should it be to Cardiff ?
You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.
It comprises roots which nobody sees, Much taller than those trees, Up and up it goes, Still it never grows?
I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?
Can you tell a 3D object that has just two surfaces?
If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?
Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?
I have lakes with no water, mountains with no stone and cities with no buildings. What am I?
I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.