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:o
2005-05-12 23:43:33
Newbie with a simple problem

Its to hard for me but it was HW so please help me out :D


I'm thinking of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: (1) it's a square number. (2) it's a cube number, and (3) the number is under 500000.

Dustin
2005-05-13 00:05:48
Re: Newbie with a simple problem

I'll give you a hint.
It's not 37.

I'm afraid I cannot answer your question, because if I answered your question, I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question,v and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, and then I would have to answer someone else's question, you get the idea.

Posting problems in the forums is discouraged for this reason. Take a look at the FAQ page.

I hope I did that link right.

:o
2005-05-13 00:53:59
Re: Newbie with a simple problem

i dont know how its not 37 helps but w/e can some one pease post it as a problem or help me solve it?

nikki
2005-05-13 01:31:28
Re: Newbie with a simple problem

Sorry, but it isn't the purpose of this site to do other people's homework. But please come back after you are done studying and enjoy our puzzles!

welcome!

:o
2005-05-13 01:49:11
Re: Newbie with a simple problem

grrrrr i wasnt asking for the awnser i just needed help, I wanted to know how to figure it out

Dustin
2005-05-13 02:12:46
Re: Newbie with a simple problem

I suppose you could write out all the 6-digit numbers whose digits add to 43 and test each and every one of them to see if there is exactly 1 false statement.

brianjn
2005-05-13 11:49:56
Re: Newbie with a simple problem

Since this is a homework problem, I could be a 'good Samaritan' and post it as a problem as you have asked. Then there are time lapse difficulties for starters (I figure that something entered today would not come through the queue for at least 4 to 5 weeks, and it may be longer). In transit there are the 'editorial hierarchy' who judge upon a problem's worth - my submission would not get through.

Federico Kereki
2005-05-13 12:54:21
How to solve this

Dustin gave you the method: write all six-digit numbers whose digits sum 43, and check which is the one that satisfies only two conditions. I would do it other way: I'd write all six-digit squares and cubes, and check those whose digits sum 43. Good luck!

Erik O.
2005-05-13 20:33:06
Re: Newbie with a simple problem

:o, if you do as Dustin and Federico suggested, you should be able to come up with quite a few answers.

Do a search on google for lists of squares and cubes you should be able to find what you're looking for.

Here's some pointers:
6 digit squares have roots between 317 - 999,
6 digit cubes have roots between 47-99,
on average, 6 numbers which add up to 43 are about 7, which means that if the first digit is a 4 (< 500000), then the remaining 5 digits will have to be an average of almost 8.

I'm guessing that the false statement is that the number is less than 500000.

Aspiring Novice
2005-05-15 11:40:35
Re: Newbie with a simple problem

actually the false statement is 2, but the number is close to making 3 false too

Aspiring Novice
2005-05-15 11:56:09
Re: Newbie with a simple problem

haha!! thats a neopets question!

Aspiring Novice
2005-05-15 16:16:01
Re: Newbie with a simple problem

yeap it is

Aspiring Novice
2005-05-15 17:36:16
Re: Newbie with a simple problem

Just trying to cheat on the lenny Conundrum are you? lol! j/k! Just find out all the 6 digit #s that add up to 43 and figure out the square roots and cubes.

Aspiring Novice
2005-05-16 13:28:45
Re: Newbie with a simple problem

lol! I need it too :/

Aspiring Novice
2005-05-16 17:26:11
Re: Newbie with a simple problem

lol! I need it too :/

Jer
2005-05-16 17:45:33
Re: Newbie with a simple problem

to be a suare and a cube the number must be a sixth power. There is only one sixth power over 500000 and its digits don't add up. Rule (3) must be true.

Aspiring Novice
2005-05-16 19:32:15
Re: Newbie with a simple problem

If you must know its 499849 or 707 squared, the sum of the numbers equals 43 and its under 500,000 so there you go.

Aspiring Novice
2005-05-16 20:27:21
Re: Newbie with a simple problem

*shakes head* tsk tsk....cheating on the lenny conundrum huh? :P

Aspiring Novice
2005-05-17 00:57:49
Re: Newbie with a simple problem

but where is that problem posted?

is it neopets?

Aspiring Novice
2005-05-17 01:24:23
Re: Newbie with a simple problem

lol, i found this site, by goin on google hahahha, so the answer is 499849 or 707 squared.. lmao

Aspiring Novice
2005-05-17 01:40:04
Re: Newbie with a simple problem

or is it 498949??? cuz dats wat i got

Aspiring Novice
2005-05-17 13:50:58
Re: Newbie with a simple problem

Well if you got 498949 you need to check your math there buddy

Gamer
2005-05-17 20:28:59
Re: Newbie with a simple problem

You shouldn't try to get the answer from someone else; that would be called cheating.

Neo-Truth
2005-05-18 01:37:42
Re: Newbie with a simple problem

Hello all...its a riddle of the week in neopets.com....Lenny Conundrum...
"I'm thinking of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: (1) it's a square number. (2) it's a cube number, and (3) the number is under 500000."

Aspiring Novice
2005-05-18 08:54:15
Re: Newbie with a simple problem

i need a number of which the cube equals up to 499849..please help...

Aspiring Novice
2005-05-18 09:05:21
Re: Newbie with a simple problem

the second one is false..because i have tried gettin the cube of numbers from 50-90 and it does not reach the exact number..so i think the answer is the square of 707 which is 499849

Aspiring Novice
2005-05-19 00:57:16
Re: Newbie with a simple problem

It's all good!

Aspiring Novice
2005-05-19 01:18:47
Re: Newbie with a simple problem

I'm thinking of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: (1) it's a square number. (2) it's a cube number, and (3) the number is under 500000.

Aspiring Novice
2005-05-19 11:39:13
Re: Newbie with a simple problem

There are a few ways to approach this problem. The answer seems to be 499849, however. Whenever you square any even number it will be even, and whenever you square an odd number the answer will be odd. Whenever you cube any odd number, it will be odd, and if you cube an even number it will be even. 707 squared is 499849 and you only need to test odd numbers cubed. Also, the 6-digit number needs to add up to 43. Therefore if all 6 digits are 7 or below, it cannont = 43 (6*7=42). If there are 2 zeros it cannont = 43(9*4=36). If all numbers are above 7 then it cannot = 43. Just some tips for similar riddles. There's tons of process of eliminations other than listed above.

chuckles the silly piggy
2005-07-31 00:06:02
Re: Newbie with a simple problem

i dont get wat ur talking about

I am the dark Lord Chuckles
2005-08-12 20:07:40
Re: Newbie with a simple problem

Neopets Lenny Conundrum.


In the first round of Snow Wars II, the Grundos surrounded their snowman with 75 ice blocks.

During the attack stage, assume every enemy catapult can fire 2 shots per round, and each shot is aimed at a unique ice block.

During the rebuild stage (i.e. the beginning of round 2), the Grundos are able to add an additional 45 ice blocks to their wall.

Assuming that the Grundos never fire their catapults at the enemies, in what round will the Grundos have no ice blocks at the end of the attack stage?

i got somewhere around 43 rounds... but im not sure

Aspiring Novice
2005-08-26 07:02:55
Re: Newbie with a simple problem

The part you missed in that one was that in Snow Wars II, the catapults increase by 1 each round until they cap at adding 5 more per level (play it and count them to determine that -- you don't have to be THAT good to get to level 6 to confirm the pattern.)

If it makes you feel any better, I came up with, and submitted, the correct answer, and got no neomail telling me that I answered correctly. Grumble.

Aspiring Novice
2005-08-26 11:33:22
Re: Newbie with a simple problem

Well that answer was 11 but what is the next one?...i'm completely puzzled....

Aspiring Novice
2005-08-30 06:01:24
Re: Newbie with a simple problem

Yey I get it it's the name of the snow faerie thanks guys!

Aspiring Novice
2005-09-02 23:19:47
Re: Newbie with a simple problem

Right, so then what's the new one? I'm terrible at math...

Aspiring Novice
2005-09-05 19:22:28
Re: Newbie with a simple problem

I have no lue what the new one is. I should have it soon though.

Aspiring Novice
2005-09-06 09:16:18
Re: Newbie with a simple problem

The base of the pyramid is 100 blocks by 100 blocks; each successive layer is one less block wide and deep, until the top layer which is simply one block. Each block is 97 cm wide by 97 cm deep by 63 cm tall.

If one liter of paint can coat exactly three square meters, how many liters are required to coat the entire exposed surface of the pyramid? Round up to the nearest liter.

Curious
2005-10-24 04:13:23
Help

Can anyone help me with the answer to this weeks Lenny Conodrum?
The first person to give me the answer.

brianjn
2005-10-24 21:29:43
Re: Newbie with a simple problem

The general rule around here is that we devote our problem solving energies to problems published in the dedicated area of the site.

brad
2005-10-25 05:32:49
Re: Newbie with a simple problem

Agreed! lol... neopets... haha

brad
2005-10-25 05:35:27
Curious... me too.

"The first person to give me the answer."
The first person to give me the answer what?

tanx
2005-10-25 13:32:22
Re: Newbie with a simple problem




<< I'm thinking of a 6-digit number. The sum of the digits is 43. And only two of the following three statements about the number are true: (1) it's a square number. (2) it's a cube number, and (3) the number is under 500000. >>



well we can deduce from the problem given that one of the last three statements is false since only two of them are true. there is no mention, however, about the truthfulness of the first two statements. "The sum of the digits is 43" could either be true or false and "I'm thinking of a 6-digit number" could equally be true or false...



so the answer is obviously 8



where



true statements =
"only two of the following three statements about the number are true"
"(2) it's a cube number"
"(3) the number is under 500000"



false statements =
"I'm thinking of a 6-digit number"
"The sum of the digits is 43"
"(1) it's a square number"


Dustin
2005-10-25 16:39:25
Re: Newbie with a simple problem

:) I like that answer, tanx!

My name
2005-10-29 09:46:33
Re: Newbie with a simple problem

pathetic. cheater. wow.

Aspiring Novice
2005-10-29 09:48:02
Re: Newbie with a simple problem

2005-05-12
2005-10-25
to now. wowow

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