May 2013
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Big Roll of Cloth

I have a roll of cloth one mile long.
I have a machine which cuts this roll into pieces of ten meters each.

How long would it take for the machine to cut the roll if each cut took four seconds?

Pick Up Sticks

Can you count the remaining sticks in this ongoing game of pick up sticks?

pick up sticks riddle

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 lake (no current).

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 signs on three doors. One says “Death from drowning,” another says “Death from machine guns,” and the last one says “Death from electric chair.” Then you see a big sign off to the side that says “Or stay in the mansion and starve to death.” What do you choose and still live?

Choose the door with the electric chair because if you recall, the power is out!

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 one female visited me between Mary and Karey.
C) Mary did not visit me before both Terry and Zoey.

Can you tell at what time did they individually visit me?

Roaming Charges May Apply

What is next number in pattern below:

131    517    192    123    ???