There is a square of a particular number which when doubled, becomes 7 more than its quarter. Can you find the number?
Can you find out what is missing? 1 3 5 2 4 ? Hint: It's not six. Think out of the box.
Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?
I got a bee but no honey. got an eye but am still blind. got a sea but no water. got a tea but no coffee. got a why but no answer. What Am I?
Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?
'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?
Which fur should we be getting from the Lion?
What Does this text mean: important=important
A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log. Can you calculate the weight of the entire wooden log?
On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?
Can you identify the hidden rebus in the image below?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.