A man dies of old age on his 25 birthday. How is this possible?
If 21x = 79x, what is the value of x?
The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?
Which is heavier: a ton of bricks or a ton of feathers?
Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?
Can you arrange four 9's and use at most 2 math symbols, to make the total 100?
Decode below three cipher riddles: 26 L of the A 7 D of the W 1000 Y in a M
There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends. What is it?
My location can be determined by the below rebus. So where am i ?
What occurs twice in a week, once in a year but never in a day?
People make me, save me, change me, raise me. What am I?
In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.
