Brain twister series...

[GerardTagayty]

Here's another:

You have a 3 quart and a 5 quart bottles, and an infinite supply of water. How can you measure out exactly 4 quarts of water?

guess lang ah

1. fill the 3 quart bottle and transer its contents to the 5 quart bottle
2. fill the 3 quart bottle and transfer its contents again to the 5 quart bottle
this leaves you with a quart of water in the 3 quart bottle.
3. throw away or take out the water in the 5 quart bottle and transfer the
1 quart water from the 3 quart bottle to the bigger bottle
4. fill the 3 quart bottle again and transfer it to the 5 quart botle. now you
now you have 4 quarts of water in the 5 quart bottle.

[leinahtan]

1. Fill-up the 5 quart bottle
2. Transfer content of 5quart bottle to the 3 quart bottle. This leaves 2 quarts in the 5 quart bottle
3. Empty the 3 quart bottle
4. Transfer the 2 quarts water from the 5quarts bottle to the 3 quart bottle. (note that 3 quart bottle now contains 2 quarts of water)
5. Fill-up 5 quart bottle again.
6. Transfer out 1 quart of water from the 5 quart bottle into the 3 quart bottle containing 2 quarts water. Now you have 4 quarts of water in the 5 quart bottle.

Way to go ch0k0y. You got it. Another idea would present a more elaborated method:

1. fill the 3 quart bottle to the brim
2. fill the 5 quart bottle with the water from the 3 quart bottle
3. fill the 3 quart bottle to the brim
4. fill the 5 quart bottle to the brim from the water in the 3 quart bottle, leaving 1 quart in the 3 quart bottle
5. empty the 5 quart bottle
6. pour the 1 quart of water from the 3 quart to the 5 quarts bottle
7. fill the 3 quart bottle up and pour in the 5 quart bottle, leaving 4 quarts

[leinahtan]

guess lang ah

1. fill the 3 quart bottle and transer its contents to the 5 quart bottle
2. fill the 3 quart bottle and transfer its contents again to the 5 quart bottle
this leaves you with a quart of water in the 3 quart bottle.
3. throw away or take out the water in the 5 quart bottle and transfer the
1 quart water from the 3 quart bottle to the bigger bottle
4. fill the 3 quart bottle again and transfer it to the 5 quart botle. now you
now you have 4 quarts of water in the 5 quart bottle.

Your guess worked!

[AnuVaYan]

There are three characters namely The Fox, The Rooster and a Sack of Rice.

Facts:

The Fox could eat the Rooster.
The Rooster could eat the Rice.
The Fox could'nt eat the Rice.

Situation:

All characters should transfer from one island to another by boat one at a time.

Questions:

How could they transfer to another island safe and complete?

lahat sila magsisimula sa same island? mahirap to a... the harder question is, paano babalik yung boat kapag nag hatid na ng isa kung one at a time lang? unless pwede hilahin hehe.

[kinyo]

eto, nasira ulo ko sa kakasolve nong college ako

there are 10 gold mines
each gold mine has 10 gold bars
all the gold bars from all the gold mines weigh 10kg
except for one whose gold bars weigh 9kg
you are given a weighing scale and are allowed only one reading

how will you know which of the goldmines has the 9kg gold bars?

take 1 gold bar from mine #1, 2 bars from mine #2, and so on till 10 bars from mine #10 and weigh them all together ... ang bigat nun ah

[j_avonni]

There are three characters namely The Fox, The Rooster and a Sack of Rice.

Facts:

The Fox could eat the Rooster.
The Rooster could eat the Rice.
The Fox could'nt eat the Rice.

Situation:

All characters should transfer from one island to another by boat one at a time.

Questions:

How could they transfer to another island safe and complete?

Sirit na!!!

[awing]

lahat sila magsisimula sa same island? mahirap to a... the harder question is, paano babalik yung boat kapag nag hatid na ng isa kung one at a time lang? unless pwede hilahin hehe.

nope, bale lilipat sila sa kabilang island using one boat. the boat pwede pabalik-balik merong sakay o wala.

[awing]

Sirit na!!!

hintay muna natin iba sir...baka may hihirit pa.

[Asus700]

Way to go ch0k0y. You got it. Another idea would present a more elaborated method:

1. fill the 3 quart bottle to the brim
2. fill the 5 quart bottle with the water from the 3 quart bottle
3. fill the 3 quart bottle to the brim
4. fill the 5 quart bottle to the brim from the water in the 3 quart bottle, leaving 1 quart in the 3 quart bottle
5. empty the 5 quart bottle
6. pour the 1 quart of water from the 3 quart to the 5 quarts bottle
7. fill the 3 quart bottle up and pour in the 5 quart bottle, leaving 4 quarts

teka, teka po. diba pwede ring ganito?

fill both bottles (3 quart and 5 quart) with water
empty half of both (1.5 quart in a 3 quart bottle and 2.5 quart in a 5 quart bottle)
then transfer the 1.5 quart to the 2.5 quart == 4 quarts.

mas simple diba?

[architect]

There are three characters namely The Fox, The Rooster and a Sack of Rice.

Facts:

The Fox could eat the Rooster.
The Rooster could eat the Rice.
The Fox could'nt eat the Rice.

Situation:

All characters should transfer from one island to another by boat one at a time.

Questions:

How could they transfer to another island safe and complete?

This is actually a very old (classic) problem. Actually all the problems posted are old classics.

The description is actually incomplete since the conditions actually are as follow:

If left alone, the fox could eat the rooster.
if left alone, the rooster could eat the rice.

Solution:

Boat brings rooster to other side.
Boat goes back.
Boat brings fox to other side.
Boat brings rooster back to original side.
Boat brings rice to other side.
Boat goes back.
Boat brings rooster to other side.