If it took eight men ten hours to build a wall, how long would it take four men to build it?
It is a six-letter word. The first four letters are me. The second and last letters are the same. The fourth second and last letter is payment. Who is it?
Solve below popular number sequence 314 159 265 358 979 323 846 ?
Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"? ( ) + ( ) + ( ) = 30
Can you place six X (crosses) in below board without making three in a row in any way ?
Can you count the number of matches in the picture below ?
What does this rebus means ? PROG WORKRESS
Buy me, smell me or deliver me, I do not change. Who am I?
What do you think with the below Picture ?
What has a bottom at the top?
If, 6 / 7 = 2 3 / 9 = 7 8 / 2 = 6 Then 4 / 5 = ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.