Let's See How Quick You Are!

ooops, thats wrong. Working;

It is 3263442.

What bugs me is that you thought this piddly little kindergarten puzzle being challenging.

You are right, that was simple. And I am not even an Engineer yet! (just a sophomore)

I can't believe I figured it out, usually I suck at these types of puzzles. How long do we have to wait before we explain how it works?

Drew

I didn't want to give away the formula, I saw no point in rewriting the number. You can believe me or not...just not that important to me.

Important enough to you not to register?

Drew

This is the formula I put in Excel reproduce the example:

=($A$1+A2)*A2

If A1=1 and A2=2 you can click on the bottom right corner of A2 and drag it down as far as you want.

Does this show that I understood the puzzle, or do you think I just copied from everyone else who got it right?

Drew

gsuhas method is the way I did it and a lot simpler to understand, methinks, as it's simply n*(n+1).

I used the guess and try again method. I think your formula is wrong though mathmatically it should be (n*n)+n

Rich Hurd

Did you really need to create an excel spreadsheet to get the answer? Just curious.

No, I resolved the solution in less than a minute, I just looked for patterns in what was there. I included the excel formula merely to show that I understood the puzzle and could re-create it in excel. I used the excel formula to show how the pattern would continue, I could have done it with my calculator, but it was more fun in excel.

Drew

Challenging for most, No.

But a break in monotony and time for some brief fun in an otherwise analytical and boring day, Yes.

I bet you did not even figure it out just went with Doorman's numbers. Since he is right.

You seem to be a bit off with your "challenging" assumption. So far there are only two correct answers... not much, is it?

Also, you just lost a bet. I did not copy Doormans answer, how would I know he was right? Besides, I don't need to copy it. I can post the formula to calculate this simple series, which I might do later, or I might not. It depends.

What may bother you more is if you just did his homework for him.

That is pretty simple - the one obvious calculation yields the answer (1806/42).

1806/42=43 (a mere 43) But you are having fun, don't you ?

yes - 43 is the key to this puzzle. Don't make me have to explain it to you.

Ah, but I save 3 minutes of life life by not giving a damn!
These number sequence things a ridiculous as there must be many (if not infinte?) sequences which have those first 5terms.
Del
(Damn I wasted a minute typing that)

N(j+1)=N(j)*[N(J)+1]

What Excel file?

I had this calculated (1806 * 1807 = 3,263,442) inside of 30 seconds. I didn't think it was very challenging either.

So, where's the damn Excel file?

_{Hmmph, I'm bored}

Took about five seconds to get the answer, still looking for the damn attachment - priceless

Took less than 3 minutes . . .

3263442

too easy... but I like it. fun

Thank you to all of you.

Can I have an Amen to his quote.

Yes, done

The bad thing is that I couldn't even begin to see how to do this. I can read and write and everything just like normal folks and I had no idea what to do with this. There must be a special talent for this sort of thing?

You lose it when you get your ears pierced.

Heck, it's not my bag either.
If you want to get good with this stuff you have to go to your local DIY store and get a big sack of numbers, then try sawing them up, heating them to red heat and beating them with hammers and such like.
i find if I get a bag of '1's with a bit of work I can make arrows out of 'em and do useful stuff like that.
A nice big 3 can make an Asiatic recurve bow too. Most other numbers are just a pain in the ass.
Del

3263442

10 seconds. i am an average engineer

3263442

1.5 mins to find out

The number squared plus itself. The sixth number is 3,263,442. It took me less than 5 minutes. My degree is in architecture.

3263442

10842

3 minutes?

I took only 3 seconds to find the logic and another 5 seconds to find the answer!

1 X (1+1)=2

2 X (2+1)=6

6X (6+1)= 42

42 X (42+1)=1806

1806 X (1806+1) = 3263442

The puzzle could have been much difficult if you would have it like:

What is 4th number?

42, 1806, 3263442, --------?

Longest part was finding the calculator.

I received one like this, allegedly only solvable by IQ's over 130.

Apparently it takes a IQ of 146 or more to understand that you first assess the value of the reward and weigh it against the value of the work involved in the proposed question or task. If the work value is greater than the reward its a simple no go.

It took me about 1 second to see that there was no excel spread sheet attached thus no reward for the work so no point in wasting my time.

Me too, so, I just gave up and came here to hear from the other guys whats inside the excel file. The lack of the reward is the first step to the lack of effort... Gee! Sounds like socialism to me... hehehe. Ok, honestly... I had already seen that some years ago. Wa sable to solve it, but te file was bad, so, here I am writing some loose words.

The next number is "3263442" - 35 seconds, but I am only a mere down under engineer. How? Simple really. Simply sqare the number and add itself.

Multiply the last number by the sum of the previous five = 92106 Simples!!!!!

1, 2, 6, 42, 1806, 3263442

OK guys, we have all had a lot of fun, solved the problem in a zillion picoseconds and had a barrel of laughs. Now, where does "13" fit in this sequence ...

8,11,5,4,9,1,7,6,10,3,12,2

It doesn't: you've just jumbled up all the numbers from 1 to 12.

Alternatively it could go anywhere: that would then be all the numbers from 1 to 13 jumbled up.

I can't see any pattern.

Well...

If Randall (#73) does not see a recognizable pattern, I don't feel so bad. I see nothing either.

I guess it might fit on the end? Result is, as Randall says, 13 jumbled numbers instead of 12.

AH-HA!

Pretty observant, you. Even though it doesn't really answer the original question, it does answer a sub-question therein. GA to you, sir!

I guess my crypyo solving skills are a little rusty... _{ah well fading eyesight, what next?}

Well, i did give the right answer (#30 & 32). i then was seeing the enthusiasm generated by this number puzzle. i gave in to an uncharacteristic Machiavellian impulse to muddle things a bit. Sincere apologies. Don't worry about eyesight, after my cataract removal, i can see as good as when i was 40 years younger

Great job!

Between 10 and 3.

[Subsequent edit. I posted before reading all; congratulations to Kvsridhar.]

Thanks

3263442 - about 9 seconds. I'm an engineer. And what attachment?

This looked like one of the MENSA questions I had when I applied (about a hundred years ago, it seems). You have to do them at speed.

its 3259830

You have to ADD one to the number, not subtract, then multiply the two.

Thanks, for the correction.

It is 3263442.

3263442?

Good one. Took less than 3 minuites but I can't find the Excel file.

3263442?

I figured it out in less then a minute and I'm not an engineer nor a doctor nor an architect. Not even an mathemetician for that matter.

Less than 2 minutes, not bad for someone who never finished high school.

I can only imagine that this takes an engineer three hours if, like the ones where I work, they take a coffee break or go outside for a smoke between steps.

Better change the job if you can. I hope it is not a fools paradise

3263442. Took about a minute. I saw the pattern almost immediately.

3,263,442

That's simple. 30 seconds. Square the last number and add the last number to the result. (42) squared = 1764. 1764 + 42 = 1806. Wait until you get into REALLY big numbers!!

Actually just take the last answer and multiply it by the answer plus 1

3263442, <1 minute, engineer

Did it in about 2 minutes. 3263442.

3263442.

3263442 less than 10 sec

The way I determined this is by placing using a row above the series:

*2 *3 *7 *?

1, 2, 6, 42, 1806,

In a series, the previous number is in some relationship to the next number. In this case, it appeared to be a simple multiplication relationship. Placing the number above and between adjacent terms revealed that the relationship is (n)(n+1) where n is the current term. Dividing 1806 by 42 indeed gives 43, which is (42+1), etc.

You have to compute the 6th number. Guessing is futile.

It is said that engineers take 3 minutes to solve this, architects 3 hours and doctors 6 hours. If you guess which the 6th number is, you'll be able to open the excel file. Once you discover it, open the attachment, enter the number as the password, put in your name, save it, and send it on.

What is the 6th number?

1, 2, 6, 42, 1806, ___???

The 6th number is 3,263,442

1)1

2) 2=1+1^2

3) 6=2+2^2

4) 42=6+6^2

5) 1806= 46+46^2

6) 3263442=1806+1806^2

7) 1.065*10^13= 3263442+3263442^2

times its self and add one

3263442

3263442

1*1=1+1=2

2*2=4+2=6

6*6=36+6=42

42*42=1764+42=1806

1806*1806=3,261,636+1806=3,263,442

Took about 15 seconds.

This simple test really does illustrate the marketing fact that, to give
an audience something to feel good about, can get a huge response.

A fact not known or appreciated by the general population.

A pat on the back, even from oneself, can work wonders.
To sell, this is a good illustration, fellow engineers. (sucker punch)

No sales for me with this one....
If it takes a square yard and a half of tripe to cover an elephants
head, what does it take to cover his bum? (no prizes sorry.)

jt.

Or more seriously...
What would you enter into a calculator to test that it was working correctly?

"What would you enter into a calculator to test that it was working correctly?"

12345679 x 81 = 999,999,999 substituting any multiple of 9 will yield its own value to the 100 millions, so that, 12345679 x 72 = 888,888,888 12345679 x 63 = 777,777,777 etc.

45 seconds

An+1 = (An)^2 + An

it's a 32,63,442!!!

I cheated. Scrolled down to see what you all had responded. Interesting to note the several ways you all derived the pattern and arrive at the correct answer.

I just saw this but the answer is 3263442

3,263,442

3263442 - what excel? what file

Wondering why so many are looking for the attachment when it is not possible to attach anything in CR4.

OP is simply quoting what he received in the chain / phishing eMail.

"engineers take 3 minutes to solve this, architects 3 hours and doctors 6 hours"

tells you that engineers know how to focus on a problem, and won't leave it undone!

architects need to refresh their creativity. they're used to working on a project, leave it to take a break and come back to it.

doctors leave their patients in the hospital and come back to them the next week.