logicA man told his son that he would give him $1000 if he could accomplish the following task. The father gave his son ten envelopes and a thousand dollars, all in one dollar bills. He told his son, "Place the money in the envelopes in such a manner that no matter what number of dollars I ask for, you can give me one or more of the envelopes, containing the exact amount I asked for without having to open any of the envelopes. If you can do this, you will keep the $1000."
When the father asked for a sum of money, the son was able to give him envelopes containing the exact amount of money asked for. How did the son distribute the money among the ten envelopes?

The contents or the ten envelopes (in dollar bills) hould be as follows: $1, 2, 4, 8, 16, 32, 64, 128, 256, 489. The first nine numbers are in geometrical progression, and their sum, deducted from 1,000, gives the contents of the tenth envelope.

logicmathHow to measure exactly 4 gallon of water from 3 gallon and 5 gallon jars, given, you have unlimited water supply from a running tap.

Step 1. Fill 3 gallon jar with water. ( 5p – 0, 3p – 3)
Step 2. Pour all its water into 5 gallon jar. (5p – 3, 3p – 0)
Step 3. Fill 3 gallon jar again. ( 5p – 3, 3p – 3)
Step 4. Pour its water into 5 gallon jar untill it is full. Now you will have exactly 1 gallon water remaining in 3 gallon jar. (5p – 5, 3p – 1)
Step 5. Empty 5 gallon jar, pour 1 gallon water from 3 gallon jar into it. Now 5 gallon jar has exactly 1 gallon of water. (5p – 1, 3p – 0)
Step 6. Fill 3 gallon jar again and pour all its water into 5 gallon jar, thus 5 gallon jar will have exactly 4 gallon of water. (5p – 4, 3p – 0)
We are done !

cleanlogicshortThis old one runs forever, but never moves at all. He has not lungs nor throat, but still a mighty roaring call. What is it?

A waterfall.

cleanlogicmathHow can you take 2 from 5 and leave 4?

F I V E. Remove the 2 letters F and E from five and you have IV.

shortwhat am II eat, I live, I breathe, I live, I drink, I die. What am I?

Fire.

animalcleanpoemsshortAlive as you but without breath,
As cold in my life as in my death;
Never a thirst though I always drink,
Dressed in a mail but never a clink.

Fish.

cleanfunnyshortYou are in a cold house in the winter. It is dark. You have one match. There is a candle and there is a wood burning stove. Which do you light first?

The match.

cleanfunnyWhat do you call a 100-year-old ant?

An antique!

animalcleanpoemsshortBranches grow on its head; it wears spotted clothes. Not a donkey of a horse, it runs like the wind.

Deer.

cleanfunnyshortWhat can you hold in your left hand, but not in your right hand?

Your right hand.