#11 - Plane Problem

There was an airplane crash, every single person died, but two people survived. How is this possible?

All were married.

#12 - Strange Distance Problem

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

You will never reach the door; it will always be half the distance, no matter how small!

#13 - Newspaper Problem

A newspaper is supposed to have 60 pages
but pages 24 and 41 are missing.
Which other pages won't be there?

Pages 19, 20, 23, 37, 38, & 42
will also be missing

#14 - Who Am I Problem

I dig out tiny caves, and store gold and silver in them.
I also build bridges of silver and make crowns of gold.
They are the smallest you could imagine. Sooner or later
everybody needs my help, yet many people are afraid to
let me help them. - Who am I?

A Dentist.

#15 - BrainBat Problem

What is represented by this BrainBat?

EEGVTABLES
EGVETABLES
GEEVTABLES
VEEGTABLES

Mixed Vegetables.

#16 - Toast Problem

Mother makes tasty toast in a small pan. After toasting one side of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices.
How can she toast both sides of three slices in 1 & 1/2 instead of 2 minutes?

toasts A, B, C (sides 1 and 2)
0-0.5 min ... A1 B1
0.5-1 min ... A2 C1
1-1.5 min ... B2 C2

#17 - Zero Divide Zero Problem

When can the following be true?
0 / 0 = 1
Yes, read as zero divided by zero equals one!

No Tens, unit, magic.. blah blah! guess enuff hint for now

1.ZERO / ZERO =1
where Z,E,R,O are all algebraic variables.

2.Add factorial sign to numerator and denominator

3.SIN(0)/SIN(0)=1

#18 - Sheikh Inheritance

An Arab sheikh tells his two sons to race their camels to a distant city to see who will inherit his fortune. The one whose camel is slower wins. After wandering aimlessly for days, the brothers ask a wise man for guidance. Upon receiving the advice, they jump on the camels and race to the city as fast as they can.
What did the wise man say to them?

Switch the camels :)

#19 - Philosopher Watch

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he traveled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Clocks can measure time, even when they do not show the right time. You just have to wind the clock up and... We have to suppose that the journey to the grind and back lasts exactly the same time and the friend has a clock (showing the correct time) - it would be too easy if mentioned in the riddle. Now there is no problem to figure out the solution, is there?

#20 - Sequence Problem

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

55,73,107
"Fifty" is five (5) characters, plus 50 (the number) = 55.
"Sixty Three": 10 characters + 63 = 73
"One hundred" : 10characters +100=110