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Digital Mirror

Time in a digital clock can be palindromic like  01:10 (same when read forwards or backwards).

What is the minimum interval between two occurrences of palindromic times?

Hot Stuff

When I feel hot, I wear my jacket inside-out.

I make a lot of noise when doing so.

I then become larger but . . . guess what? I weigh less.

What am I?

Swimmer's Solution

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 [...]

Planet Hollywood

I am a god
I am a planet
A Measurer of heat.

What am I?

Mansion of Death

You’re in a mansion and the power is out. You see a green door and a red door. Pick one. Now you see a purple door and a orange door. Pick one. Now you see a door with a golden handle and a door with a silver handle. Pick one. You finally come to some [...]

Wicked Socks

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?

Chick Magnet

Mary, Karey, Terry and Zoey visited me on Valentine’s Day.

The time of each girl’s visit is listed below:
A) Mary at 8:00
B) Karey at 9:00
C) Terry at 10:00
D) Zoey at 11:00

(Each time mentioned above may be either AM or PM.)

Also, the below statements are true:
A) Terry did not visit me between Karey and Zoey.
B) At least [...]

Drunken Servents

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 [...]

Average Salary

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?

Speed Demons

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?