[gabehabe]

This could be fun.

RULES:

• If you're just going to use a calculator, write a program, or whatever to calculate the answer, then don't post.
  
• You must solve this in your head. [The use of pen/paper or notepad is allowed]
  
• You may write it as a program when you create your problem, so that you know 100% what the correct answer is.
  
• The result must equate to an integer. [No decimals. At least not for now. Let's see how difficult this gets first!]
  
• Go crazy!

So whoever gets this right will post another problem for someone else to solve. Get it? Good. NO CALCULATORS/PROGRAMS TO CALCULATE IT FOR YOU! IN YOUR HEAD ONLY!


First problem:
(((1 << ((10*3)/4)) * 2) - (32*2)) / 192

[tody4me]

My guess ... WTF.

This post has been edited by tody4me: 22 December 2008 - 02:58 PM

[KYA]

FIRST OFF. EXCELLENT THREAD! Awesome way to keep sharp during the winter break!

My proof:



I think to think about the next one, give me a little while.

[gabehabe]

Wait. You lost me. I see an answer in that, but not at the end. So I don't know if you're awesome or not.

Tell me your final answer. Be clear, dammit!

[KYA]

341

I might do the "other" solution. An OR of 1 and 15 should give the same result. That's originally why I calculated out 15 in binary.

[gabehabe]

341 is wrong.

I wrote that in C++ and I got a different result. [Told you, you can write your own in the language to test it, just not to find the answer of someone else's]

HINT: The answer is on that sheet. Somewhere. I think you've really overcomplicated it.

[KYA]

UGH. I missed a parentheses!

How did you shift a mixed number? in your head or on paper?

30/4 = 7.5

1 << 7.5?

This post has been edited by KYA: 22 December 2008 - 04:25 PM

[gabehabe]

Look at it more closely.

((10*3)/4)) * 2)

[KYA]

No. You mistyped () then. Look at the OP. (((1 << ((10*3)/4)) * 2) - (32*2)) / 192

() Takes precedent other then socpe resolution

I think writing a program is cheating. You should have to do it in your head/on paper like the OP says.

Anyways:

(((1 << ((10*3)/4)) * 2) - (32*2)) / 192
1<< 7.5 is really 1 << 7, so 128 * 2 = 256
-64 = 192
192/192
=1 <- Answer

This post has been edited by KYA: 22 December 2008 - 04:32 PM

[gabehabe]

You got it.

I apologise for getting it wrong in the first place. I'm tired.

That's my excuse and I'm sticking to it.

Essentially, I was right. I just read my own problem incorrectly.

I suck.

[KYA]

Further proof since we are talking about coding it:



Even not using integers it won't do half a bit

[KYA]

OK. Next math problem:

File's attached. Paint was being retarded. It's a series.

Attached File(s)

•  dic_math_problem__series_.doc (17K)
  Number of downloads: 169

[GWatt]

KYA, I can only see part of that equation.
the Y(n from 0 to 5) = (n + 1^n)/n!
is that right?

[KYA]

Hmmm, I used Mathtype in Word.

Anyway:

E (n = 0 to 5)

((n+1)^n)/n!

This post has been edited by KYA: 22 December 2008 - 06:39 PM

[GWatt]

OK, it shows up correctly in pages, but not openoffice

I forgot anything with series about 2 years ago, so this is the answer I got:
14041/120

This post has been edited by GWatt: 22 December 2008 - 07:01 PM