Using Only Five 5's and any mathematical operator make sum as 37
What has 88 keys?
Begin with a word, five letters to my name, Remove the first and last but I am the same Take out my middle and still, I remain. What word am I?
What has hands, but can’t clap?
A network of 20 x 10 squares is given to you. Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?
No matter how little or how much you use me, you change me every month. What am I?
By using 'because' continuously three times, can you make an English statement ?
Prove that twice of ten is the same as twice of eleven.
The Little ant seems to be always confused. Do you know why?
Find the next number in the sequence 5 12 24 36 ?
What does this Rebus Picture means ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
