Born In December

Dustin was born on December 28th yet his birthday always falls in the summer. How is this possible?

Dustin is Australian, where the three hottest summer months are December, January and February.

Posted in Brain Teasers

In Times Of War He Burns Asunder

Man walks over, man walks under,
In times of war he burns asunder.

What is it?

A bridge.

Posted in Riddles

A One Letter Change

At my start I last a mere eleven days,
But change one letter and I’m over 31 years.

What am I?

One million seconds (about 11 1/2 days).

Change the “m” to a “b” to get one billion seconds (about 31.7 years).

It’s rather surprising that a million seconds and a billion seconds differ by such a large duration.

Posted in Riddles
Tagged with

I Cannot Speak

I cannot speak but I have great knowledge,
I’m not a tree but I have leaves.
I have hinges but I am neither a door nor a window.

What am I?

A book.

Posted in Riddles
Tagged with

B C D

B, C, D, E, G, P

What is the next letter in the sequence?

T. All of the letters rhyme.

Posted in Brain Teasers

No New Digits

A six-digit number represented by ABCDEF (each letter represents a different number) can be multiplied by 2, 3, 4, 5, and 6 and yet no new digits appear in the result. As a matter of fact, all the digits are rotated. What is the number?

142857 (The first 6 digits of 1/7)

2 x 142857 = 285714
3 x 142857 = 428571
4 x 142857 = 571428
5 x 142857 = 714285
6 x 142857 = 857142

Posted in Brain Teasers

Two Hours Ago

If two hours ago it was as long after one o’clock in the afternoon as it was before one o’clock in the morning, what time is it right now?

9pm (or 21:00). There are 12 hours between 1pm and 1am, so 6 hours after 1am is halfway. 6 hours + 1pm equals 7pm. In order for 7pm to be 2 hours behind the current time, it must be 9pm.

Posted in Brain Teasers

A Special Something Shared

The numbers 3, 7, 8, 40, 50 and 60 all share something that no other whole number does. What is it?

When spelled out in English they each have exactly five letters.

Posted in Brain Teasers

A Big Pizza Pie

To get the most pizza, should you order two 12″ pizzas or one 18″ pie?

One 18″, with ~255 sumptuous square inches. Two 12″ pizzas would only give you ~226 square inches.

Note: The area of a circle is = πr2.

Posted in Brain Teasers

Reverse to Equal Ten

Which two of these rows can be reversed so the total of each row, across and down, equals 10?

A. 5 4 1
B. 6 1 3
C. 3 5 2

Rows B and C, becoming:

A. 5 4 1
B. 3 1 6
C. 2 5 3

Posted in Brain Teasers