There is a square of a particular number which when doubled, becomes 7 more than its quarter. Can you find the number?
Solve the alphametic puzzle by replacing the alphabet with the number. S T O R M + S O L E S ========= T O W E L =========
At my favorite fruit stand, an orange costs 18, a pineapple costs 27, and a grape costs 15. Using the same logic, can you tell how much a mango costs?
How can one talk without saying a single word?
During which month do people sleep the least?
What three numbers, none of which is zero, give the same result whether they’re added or multiplied?
Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?
What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?
Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?
You throw me out when you want to use me and you take me in when you don't want to use me. Who Am I?
Can you identify the Oscar-winning movie from the rebus below?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.