Michael Phelps, the famous swimmer can swim downstream in a lake in exactly 40 minutes (with the lake current helping his time).
He can swim upstream in the lake in exactly 60 minutes (against the lake current).
The length of the lake is two miles.
How long would it take Michael Phelps to cover the distance of a still [...]
I have some blue and red socks in my drawer.
I have a total of four socks.
If I pick two socks and the percentage that I end up with a pair of red socks is 50%, then what is the percentage of me picking a pair of blue socks?
What is next number in pattern below:
131 517 192 123 ???
The King of a small country invites 1000 senators to his annual party. As gifts, each senator brings the King a bottle of wine, for a grand total of 1000 bottles of wine. Each bottle is signed by the senator who gave it.
At the end of the party, the Queen tells the King that one [...]
Five coworkers want to know what the average of all their salaries is, but refuse to reveal ANY information about their own salaries to their coworkers. How can they calculate the average?
Andy, Barry, and Carl race each other in a 100-meter dash. They each run at a constant speed throughout the sprint. Andy beats Barry by 20 meters, and Barry beats Carl by 20 meters. How many meters does Andy beat Carl by?
There are 1 million closed school lockers in a row, labeled 1 through 1,000,000.
You first go through and flip every locker open.
Then you go through and flip every other locker (locker 2, 4, 6, etc…). When you’re done, all the even-numbered lockers are closed.
You then go through and flip every third locker (3, 6, 9, [...]
A man who lives in Middletown has two girlfriends, one in Northtown and one in Southtown. Trains from the Middletown train station leave for Northtown once every hour. Separate trains from the station also leave for Southtown once every hour. No trains go to both Northtown and Southtown.
Each day he gets to the Middletown train [...]
Ten pirates find a buried treasure of 100 pieces of gold.
The pirates have a strict ranking in their group: Pirate 1 is the lead pirate, Pirate 2 is second-in-command, Pirate 3 is the third most powerful pirate, and so on.
Based on this ranking, the pirates decide on a system to determine how to split up [...]
Can you tell me what the picture above says?