The game is a math game, we start out with a simple math question then whoever answers it has to come up with a slightly harder question. Ok what is 12x12?
The game is a math game, we start out with a simple math question then whoever answers it has to come up with a slightly harder question. Ok what is 12x12?
144
ok
(17x4)+37
Okay, 105.
Now, what is the square root of 0.1?
0.316....
What is the last digit of the number 2007^2007?
3?
Thank you.
What's √123456789ABCDEFEDCBA987654321 in base-16 (hexadecimal)?
111,111,111,111,111
presuming I'm correct, what is the first set of "10s" (e.g. 20 through 29, or 140 through 149) for which there are no prime numbers.
200-209
what is the smallest number which can be written as the sum of two (positive) cubes in two different ways?
except 2
I'll post the answer in 12 hours, for now I'll need to ask for the number to get a taxicab.
Last edited by The_Radiation_Specialist; 2007-Sep-18 at 02:04 PM. Reason: hints
http://en.wikipedia.org/wiki/1729_%28number%29
1729 = 1^3 + 12^3 = 9^3 + 10^3
Post a question anyone...
A rectangular floor is covered by square tiles. The tiles along the edge of the floor are red. The rest are white. There is an equal number of red and white tiles.
How many tiles are there?
8x6
Nice, you need to post a slightly harder question now, TRS.
Using only three "9's" and any mathematical sign (+ - X / sqrt ^ ! etc) make it so that it can equal digits 1 to 10.
eg. for 1 you could write (9/9)^9
note there must be three "9's"
1: (9/9)^9
2: (9+9)/9
3: sqrt (9*9/9)
4: sqrt(9) + 9/9
5: sqrt(9)!-9/9
6: (sqrt (9*9/9))!
7: sqrt(9) + 9/9
8: 9 - (9/9)
9: 9*9/9
edit: Thanks to Eroica for pointing out the missing factorial:
7: sqrt(9)! + 9/9
Coincidentally (re TRS's comment), I gave some thought to being a smart aleck and using 0.999... as the answer to "1", but since it used a "0", it technically would have been wrong.
Last edited by pghnative; 2007-Sep-21 at 12:46 PM. Reason: correct typo
*Reads the thread, then slowly backs away*
Aha! My math-fu is too weak...
?7: sqrt(9) + 9/9
more like 9-sqrt(9) + 0.9(recurring)
No Discussions about the validity of 0.999... = 1 ! I'm serious.
"69", dude!
Find the largest 51-digit number divisible by 11. (probably takes fewer keystrokes to describe the number than to type it out!)
Todd
Taxicab numbersI've been meaning to ask: how was that a hint for 1729?
999,999,999,999,999,999,999,999,999,999,999,999,99 9,999,999,999,990Find the largest 51-digit number divisible by 11.
I didn't count the 9s, but unless you miscounted, it's right.
Todd
How much dirt is there in a pentagonal prism-shaped hole with each side of the pentagon 1 meter and the depth 4 meters? Approximate to the nearest meter cube.
none
121 is an example of a palindromic perfect square. Of course, it's square root (11) is also a palindrome.
What is the smallest palindromic perfect square whose square root is not a palindrome.
A fisherman catches a number of fish. The 3 heaviest together make up 35% of the total weight of the catch. He immediatelly sells these fish. At this point the 3 lightest fish make up 5/13 of the weight of the remaining fish.
How many fish did the fisherman catch?