A Trapped Flock of Birds

A flock of birds are trapped in a delivery truck. When would the truck weigh the most?

a) When the birds are resting on the floor
b) When they’re all flying
c) The weight remains the same

c – The weight doesn’t change since it’s a closed system.

Posted in Brain Teasers

Half of Eight

What is half of 8?

Hint: It’s not 4

3 (if you slice vertically) or 0 (if you slice horizontally)

Posted in Brain Teasers

The Most Impressive Boundary

The most impressive boundary’s not a wall.
It’s not a manufactured thing at all.
Moving towards it won’t reduce the gap
and nothing marks its presence on a map.

The horizon.

By Sef Daystrom

Posted in Riddles

Fourth of July in England

Is there a 4th of July in England?

Yes, there’s a 4th of July in every country. Of course they don’t treat it as a holiday as citizens of the United States do, but that’s not what was asked.

Posted in Brain Teasers

What Has Four Legs and Flies?

What has four legs and flies?

A horse with bugs or two pairs of trousers. The four legs should be obvious and the flies are the zippers.

Posted in Riddles

Mysterious Math

This problem can be solved by preschool children in five to ten minutes, by programmers in an hour and by people with higher education…well, check it yourself.

8809 = 6
7111 = 0
2172 = 0
6666 = 4
1111 = 0
3213 = 0
7662 = 2
9313 = 1
0000 = 4
2222 = 0
3333 = 0
5555 = 0
8193 = 3
8096 = 5
1012 = 1
7777 = 0
9999 = 4
7756 = 1
6855 = 3
9881 = 5
5531 = 0
2581 = ?

What is the missing number and why?

Two. The number is how many closed circles there are in the 4 digits. 0, 6 and 9 each have one, 8 has 2.

Posted in Brain Teasers

SO ND JF

SO, ND, JF, MA, __, __

What are the next two pairs of letters?

MJ, JA. September, October, November, December…

Posted in Brain Teasers

Never Stolen, Owned By All

I can never be stolen from you.
I am owned by everyone.
Some have more, some have less.

What am I?

Knowledge.

Posted in Riddles
Tagged with

Every Dawn Begins With Me

Every dawn begins with me
At dusk I’ll be the first you see
And daybreak couldn’t come without
What midday centers all about
Daises grow from me, I’m told
And when I come, I end all cold
But in the sun I won’t be found
Yet still, each day I’ll be around

The letter “d”.

Posted in Riddles

The Truck and the Plane

A delivery truck from the post office is sent to the airport to meet a cargo plane at its planned arrival time. The plane lands ahead of schedule and its contents are brought toward the post office by bicycle. After a half hour, the bicycle meets the truck and the mail is transferred.

The truck returns from the post office 20 minutes early. How early did the plane arrive? (Assume all transactions are instantaneous)

The delivery truck arrived back 20 minutes early, so it would have taken 20 minutes to go from where it met the bicycle to get to the airport and back. Therefore, the bicycle and truck met when the truck was 10 minutes from the airport. Adding those 10 minutes to the 30 minutes the truck had already driven to meet the bicycle means the plane arrived 40 minutes ahead of schedule.

Posted in Brain Teasers