The worlds first riddle!

10 Coins
[size=7]I get three
1 half buck & 9 pennies
1 quarter, 1 dime, 4 nickels, & 4 pennies
5 dimes, 1 nickel, and 4 pennies[/size]

Late again!
[size=7]Peter left at 10:45 AM unless he crossed a time zone
West to East Peter left at 9:45 AM
East to West Peter eft at 11:45AM[/size]

You can dig those coins outa Bob
[size=7]n+q=30
5n+25q=410
q=13, n=17[/size]

And all I wanted was cigaretts
[size=7]He takes 40 minutes to get to the mall & 100 minutes to get home.[/size]

Rap

Largest number
[size=7]9^9^9=1.988X10^77[/size]

16 crows
[size=7]8 crows, 8 buttons, 8 minutes
8 crows, 16 buttons, 16 minutes
16 crows, 32 buttons, 16 minutes
so # of buttons=4*8=32[/size]

Squares on an oversize chess board
[size=7]for perfect squares #sq=n(n+1)(2n+1)/6
#sq=10*11*21/6=5*11*7=385
385 squares[/size]

Rap

Even bigger

[size=7]Since 9^9^9 is an integer I can take it's factoral
(9^9^9)![/size]

Now that is a biiiiiigggg number.

Rap

[size=7]LARGEST NUMBER
If no operator are allowed, I'd say 9^(9^9). When written by hand there are no operators in the preceding expression.

If operators are allowed, how about 9!^(9!^9!)?

CROWS
32

SQUARES
Is the problem stated in English?

Perhaps you're after the number of squares in a 10x10 grid. In that case, there are 385.[/size]

On second thought, the factorial operator should not be allowed. Otherwise, there is no limit to the size of the number - just keep taking factorials of factorials...

Rap:

I'm pretty sure that exponents are evaluated top to bottom. Otherwise, a^b^c = a^(bc).

Therefore, 9^9^9 = 9^(9^9) = 9^387420489
which is a 369693100-digit number.

Mark:

59 CENTS
3 (50, 9x1; 25, 10, 4x5, 4x1; 5x10, 5, 4x1)

PETER
10:45 a.m.

30 COINS
13 quarters, 17 nickels

SHOPPING CENTER
2 hours and 20 minutes


Rap:

10 Coins
I get three
1 half buck & 9 pennies
1 quarter, 1 dime, 4 nickels, & 4 pennies
5 dimes, 1 nickel, and 4 pennies

Late again!
Peter left at 10:45 AM unless he crossed a time zone
West to East Peter left at 9:45 AM
East to West Peter left at 11:45AM

You can dig those coins outa Bob
n+q=30
5n+25q=410
q=13, n=17

And all I wanted was cigaretts ( HEALTH WARNING - smoking can damage your lungs)
He takes 40 minutes to get to the mall & 100 minutes to get home.

Them guys iz good.


Rap - continued:

Largest number
9^9^9=1.988X10^77 ^ ^

16 crows
8 crows, 8 buttons, 8 minutes
8 crows, 16 buttons, 16 minutes
16 crows, 32 buttons, 16 minutes
so # of buttons=4*8=32

Squares on an oversize chess board
for perfect squares #sq=n(n+1)(2n+1)/6
#sq=10*11*21/6=5*11*7=385
385 squares

Rap - continued - continued:
Even bigger

Since 9^9^9 is an integer I can take it's factoral
(9^9^9)!

Now that is a biiiiiigggg number. (Very true)


(Well 999 is the logical answer - incorrect though, we can go bigger.

Did you get the "power" brainwave and think of 99^9 (99 to the power of 9), which calculates out as 99*99*99*99*99*99*99*99*99.

Even better is 9^99 (9 to the power of 99) which calculates out as 9*9*9*9*9*9*9 ... and so on 99 times.

The correct answer, however, if you extend the idea even further ends up as... 9^9^9 (9 to the 9th power of 9).

Work out the second and third powers first (9*9*9*9*9*9*9*9*9 = 387420489.) We can therefore restate the sum as 9^387420489 which works out as.... very very big indeed.)



Mark returns with:

LARGEST NUMBER
If no operator are allowed, I'd say 9^(9^9). When written by hand there are no operators in the preceding expression.

If operators are allowed, how about 9!^(9!^9!)?

CROWS
32

SQUARES
Is the problem stated in English? (Is this the riddle forum, or what!)

Perhaps you're after the number of squares in a 10x10 grid. In that case, there are 385.



Time I think to get down and dirty. What do you all know of the universe, molecular biodiversity and life in distant galaxies? (No, I am not talking about Europe) :wink:


Can you calculate (without the use of a Cray) the mass of 96.0 mL of a solution that has a density of 1.09 g/mL at 20° C

Due to the fact that I am a kind, caring, sharing sort of person, I give you the answer.


a) 88.1 g
b) 0.0113 g
c) 105 g
d) 1.09 g



Please excuse my pour englich if I ask, ?'what are the sign and magnitude of the charge of an atom containing 14 protons, 15 neutrons and 12 electrons'


a) 1-
b) 1+
c) 2-
d) 2+



Are you still with me? Element X consists of 19 protons and 20 neutrons. What is the atomic mass number of element X


a) 39
b) 19
c) 1
d) 20


How many electrons are in element X in question #3



a) 39
b) 19
c) 1
d) 20



5. What is Element X in question #3



A girl bought a dog for $10, sold it for $15, bought it back for $20, and finally sold it for $25. Did the girl make or lose money, and how much did she make or lose


100 pounds of chocolate is packaged into boxes each containing 1 1/4 pounds of chocolate. Each box is then sold for $1.75. What is the total selling price for all of the boxes of chocolate


Amy can mow 600 square yards of grass in 1 1/2 hours. At this rate, how many minutes would it take her to mow 600 square feet


Beware the green scary door

[size=7]1. C
2. D
3. A
4. B
5. Potassium (K)

GIRL/DOG
She made $10

CHOCOLATE
$140

AMY
10 minutes[/size]

Kemistrie
c) 105 g
d) 2+
a) 39
b) would be 19 if not ionized
Potassium

How much for the doggie in the window?
-$10+$15-$20+$25=$10

Chocolate is chemically a cousin of cocaine
100#*$1.75/1.25#=$100(7/4)/(5/4)=$100(7/5)=$20*7=$140

Does Amy work topless? Cause this is pretty crip bucks so I really expect Amy to show some tits.......

Also Amy is really slow.
1.5/3 hrs=90/3 min = 30 min=1/2 hr
600 ft in 30 min is 20 ft^2/per min, a 1 foot wide mower is moving 0.33333 ft/sec. That's 0. 2272 mph.

I can push by 22 incher at least three times faster and I cut my grass in the nude.

rap

Rap:
Amy's three times faster than you give her credit for. I'll take a slow Amy over a nude Rap any day!

Your right markr, 9 ft^2 in a yd^2. BTW I'd take Amy over me too even for just 10 minutes!

Rap

You have a wife who always lies. She has two identical sisters, one of which always speaks the truth, and one who sometimes lies and sometimes
tells the truth, she is the diplomatic one.

You want to identify you wife by asking the each one one question.

The middle wife you ask: which type are you?
She answers: the diplomatic one.
The one on the left you ask: Which type is right next to you?
And the left one says: the lying one.

What question do you need to ask the woman on the right to find out for sure which is your wife?

And why?

Whim

Let us label the three A, B, and C. We shall designate a liar with the letter L, a truth-teller with T, and the one who tells both lies and truth with S. There are only 6 permutations of the letters L,T, and S. Arrange them thus:
…A B C
1:T L S
2:T S L
3:L S T
4:L T S
5:S T L
6:S L T

We are looking for ?'L'.
The middle one says she is the diplomatic one. (She cannot be 4/5 (T) which leaves:)

…A B C
1:T L S
2:T S L
3:L S T
6:S L T

The one on the LEFT says, "The middle is the lying one" (This eliminates number 2. which leaves:)

…A B C
1:T L S
3:L S T
6:S L T

What question do you need to ask the woman on the right to find out for sure which is your wife?

"Which of the other two always tells the truth?"

?'T' must say, Neither (This eliminates 3/6)


1:T L S

Your wife (L) is in the middle, and you are welcome to her. I do not want her mowing my lawn) :wink:

Mark:

1. C
2. D
3. A
4. B
5. Potassium (K)

OMG we have a NASA grad amongst us.

GIRL/DOG
She made $10

CHOCOLATE
$140

AMY
10 minutes



Rap:

Kemistrie

c) 105 g
d) 2+
a) 39
b) would be 19 if not ionized
Potassium

WOW! Another one.

How much for the doggie in the window?
-$10+$15-$20+$25=$10

Chocolate is chemically a cousin of cocaine
100#*$1.75/1.25#=$100(7/4)/(5/4)=$100(7/5)=$20*7=$140


"Does Amy work topless?"

Least said, soonest mended. :wink:


"BTW I'd take Amy over me too even for just 10 minutes! "

10 minutes. You wish.




Can you help Hogwarts calculate the gram formula weight of water in g/mol.


a) 16.00
b) 32.04
c) 1.008
d) 18.02


He wants to know many water molecules does one mol of water contain


a) 6.02 x 1023
b) 12.04 x 1023
c) 1
d) 18.02


Which ONE of the following name-formula pairs is INCORRECT


a) phosphoric acid, H3PO4
b) sulfate ion, SO42-
c) carbonate ion, CO3-
d) nitrite ion, NO2-



My old teacher used to frighten his students by throwing the phone book onto the desk and asking the question, (I forget the exact words, but they went along the lines):

"If there are ; 6,273 active barbers in Illinois; with 66% of the state's population.

How many barbers are there in Chicago



If a certain percentage of a certain percentage of 600 is 96.

What is that certain percentage


A U-shaped figure contains 11 squares of the same size. The area of the U-shaped figure is 176 square inches. How many inches are in the perimeter of the U-shaped figure


A dollar was changed into 16 coins consisting of just nickels and dimes. How many coins of each kind were in the change

Try wrote:
"This eliminates number 2. which leaves:

…A B C
1:T L S
3:L S T
6:S L T

What question do you need to ask the woman on the right to find out for sure which is your wife?

"Which of the other two always tells the truth?"

?'T' must say, Neither (This eliminates 3/6)


1:T L S"
-----------------------
I also got it down to three. However, your last question doesn't do the job.

1: S could give any answer (including neither)
3: T says neither
6: T says neither

If the answer is neither, you can't eliminate anything.

I don't think there is a question that can be asked of the third person to determine the liar.

[size=7]BARBERS
~4140

CERTAIN PERCENT
40

U
96 inches

CHANGE
12 nickles, 4 dimes[/size]

1d) 18g/gmole
2a) 6.023x10^23
3c) CO3 (-2)

Barbers in Chigago
6273*66%=4140

Percentage x^2*600=96 so x^2=96/600=4/25
so x=sqrt(4/25)=2/5 and 2/5=40%

Building blocks
Any U has a perimeter of 22 block sides. A block is 176in^2/11=16in^2. So a block is a 4 in square. A side is 4 in. 22 sides is 88 in.
So any U has a perimerimeter of 88 in

Coins
5n+10d=100 => n+2d=20
n+d=16
so d=4, n=12
4 dimes 12 nickels

Rap

"Do you know a good lawyer so I can divorce the liar?"

Mark:

?'Whimery'

"I don't think there is a question that can be asked of the third person to determine the liar."

There had better be, or there will be trouble.

"Do you know a good lawyer so I can divorce the liar?"

Leave it to me. :wink:


BARBERS
~4140

Obviously no one expects the precise number of barbers in Chicago; they want to hear you go through a line of thinking. The variables you'll want to consider are the population of Chicago and the percentage that's male; the number of haircuts the average male has per year divided by the number of days in the year, taking into account the number of days per year barbershops are open; and the number of haircuts an average barber can give per day. By the way, there are 550 barber shops in Chicago, and roughly 4,140 barbers. (Not that they are all ?'rough') But Mark knew that.


CERTAIN PERCENT
40

U
96 inches

CHANGE
12 nickles, 4 dimes



Rap:

1d) 18g/gmole
2a) 6.023x10^23
3c) CO3 (-2)

Wow! (again)

Barbers in Chigago
6273*66%=4140

Percentage x^2*600=96 so x^2=96/600=4/25
so x=sqrt(4/25)=2/5 and 2/5=40%

Building blocks
Any U has a perimeter of 22 block sides. A block is 176in^2/11=16in^2. So a block is a 4 in square. A side is 4 in. 22 sides is 88 in.
So any U has a perimerimeter of 88 in.

(Close but you will not have a walk-on part on ?'This Old House' with Steve and Norm)

Coins
5n+10d=100 => n+2d=20
n+d=16
so d=4, n=12
4 dimes 12 nickels




$1200 is divided among four brothers so that each gets $ 100 more than the brother who is his next younger brother. How much does the youngest brother get



A train traveling at 30 miles per hour reaches a tunnel which is 9 times as long as the train. If the train takes 2 minutes to completely clear the tunnel, how long is the train

(I mile = 5,280 feet)



Alice needs 1 hour to do a certain job. Betty, her older sister, can do the same job in 1/2 hour. How many minutes will it take them to do the job if they work together at the given rates



Two coins, both silver dubloons, are melted down and recast as a single coin of the same thickness. How does the diameter of the new coin compare with the diameter of one of the original coins