I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?
What's the next in the series? H, Be, F, S, Mn, Kr, In, Gd, Tl, ?
I am under you when I am whole. I shift above you if you remove the first letter. I come all around you if you remove the second as well. Can you tell me who I am?
Replace the question mark with the number below given a simple math problem.
What does this rebus means ? PROG WORKRESS
Find the smallest sentence with all the English alphabet.
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
What does it mean?
Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?
Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?
I travel all around the world but always stay in the corner. What am I?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
