The Black Vault Message Forums

Discover the Truth!        

Questions that make you think...

48÷2(9+3) = ?

In this forum, questions are asked which are really tough to answer. Some philosophical, some regarding morality and many others. Have fun, and post your own personal tough questions!

Postby SmokinJoe » Fri Jul 13, 2012 10:23 pm

bionic wrote:I get 24..
there's another answer?


If u got 24, then either you didn't divide into 48 or multiply by 12. There's one more step from the point of "24" either way.
Dawkins thinks belief in God is an excuse to evade thinking in the scientific world. Sadly, he is ignorant to the list of christian scientists who have contributed & founded many of the sciences he himself believes in. How ironic.
User avatar
SmokinJoe
 
Posts: 360
Joined: Thu Apr 09, 2009 11:54 am
Location: OHIO

Postby at1with0 » Sat Jul 14, 2012 9:18 pm

Division is defined to be multiplication by the reciprocal...
"it is easy to grow crazy"
User avatar
at1with0
 
Posts: 9183
Joined: Thu Apr 09, 2009 5:55 pm
Location: the coproduct of the amalgam of all structures

Postby bionic » Tue Jul 17, 2012 1:01 pm

oh... it's two right? duh
I am such a flake..now more than ever, it seems
math genius material..I am not
:P
heck..beauty school material, I am realizing I might not even be, at this point.
(she's even got the pink hair..lol)
http://www.youtube.com/watch?v=KRVAT2QSpmo
Willie Wonka quotes..
What is this Wonka, some kind of funhouse?
Why? Are you having fun?
A little nonsense now and then is relished by the wisest men.
We are the music makers, we are the dreamers of dreams
User avatar
bionic
 
Posts: 9889
Joined: Thu Apr 09, 2009 11:54 am

Postby steve0339 » Tue Feb 05, 2013 11:43 am

I'm confident that I marginally understand the answer of 288, even though I got 2. 288 actually looks believable if you keep in mind that almost everything, according to mathematicians can be proven with numbers. just start messing with t hem and see what you get.
User avatar
steve0339
 
Posts: 10
Joined: Wed Nov 28, 2012 12:13 pm

Postby at1with0 » Tue Feb 05, 2013 11:55 am

It's 288 if and only if you use the same convention that mathematicians use, which is twofold in this case:

1. Pemdas. Parentheses, exponentiation, multiplication, division, addition, subtraction.
2. Division is defined to be multiplication by the reciprocal and subtraction is defined to be addition of the opposite.
"it is easy to grow crazy"
User avatar
at1with0
 
Posts: 9183
Joined: Thu Apr 09, 2009 5:55 pm
Location: the coproduct of the amalgam of all structures

Postby greeney2 » Thu Feb 07, 2013 2:55 pm

Asked my son in law who is a math teacher and has a Masters in Math. This is what he said, even I said the answer was 2.


Answer =Two,

Order of operations problem(i.e. please excuse my dear aunt sally). Parenthesis work first(add), then multiply, then divide. You can multiply or divide in any order, but work in parenthesis takes precedence regardless of operation.

Hope this helps, often people play with these sorts of problems, so there may be some trick that they may say affects the answer.
Last edited by greeney2 on Thu Feb 07, 2013 7:11 pm, edited 1 time in total.
greeney2
 
Posts: 9687
Joined: Thu Apr 09, 2009 11:54 am

Postby at1with0 » Thu Feb 07, 2013 3:05 pm

greeney2 wrote:Asked my son in law who is a math teacher and has a Masters in Mat. This is what he said, even I said the answer was 2.


Answer =Two,

Order of operations problem(i.e. please excuse my dear aunt sally). Parenthesis work first(add), then multiply, then divide. You can multiply or divide in any order, but work in parenthesis takes precedence regardless of operation.

Hope this helps, often people play with these sorts of problems, so there may be some trick that they may say affects the answer.

I'm afraid your son in law is incorrect.

48÷2(9+3)
48÷2(12) (Parentheses)
24(12) (Division)
288.

That and see the explanation of why you can multiply or divide in any order, in one of my earlier posts in this thread.
"it is easy to grow crazy"
User avatar
at1with0
 
Posts: 9183
Joined: Thu Apr 09, 2009 5:55 pm
Location: the coproduct of the amalgam of all structures

Postby Dragoness » Thu Feb 07, 2013 4:15 pm

Well, following the logic of the Math teacher (I think), I got '0.5'

48÷2(9+3)
48÷2(12)
48÷24=0.5

Of course, that is what you get when you use a calculator and you enter it in that order (12*2÷48), to get to 2, you have to clear and swap the numbers. I like your way better, at1with0. It's easier for the non-math genius (like me) to understand. Yes I do need a calculator for math :crazy: :) .
User avatar
Dragoness
 
Posts: 85
Joined: Fri Jan 11, 2013 7:59 pm
Location: Melbourne, Florida

Postby greeney2 » Thu Feb 07, 2013 7:17 pm

Even I know you are dividing by the product of the right side of the division sign. Dragoness, you have the last function backwards, 48 is divided by 24, not 48 into 24.


My son is law is right, the answer is 2.
greeney2
 
Posts: 9687
Joined: Thu Apr 09, 2009 11:54 am

Postby at1with0 » Fri Feb 08, 2013 8:37 am

greeney2 wrote:Even I know you are dividing by the product of the right side of the division sign. Dragoness, you have the last function backwards, 48 is divided by 24, not 48 into 24.


My son is law is right, the answer is 2.


If you show how he got it I could tell you where his mistake is.
"it is easy to grow crazy"
User avatar
at1with0
 
Posts: 9183
Joined: Thu Apr 09, 2009 5:55 pm
Location: the coproduct of the amalgam of all structures

PreviousNext

Return to Questions that make you think...

cron
  • View new posts
  • View unanswered posts
  • Who is online
  • In total there are 0 users online :: 0 registered, 0 hidden and 0 guests (based on users active over the past 10 minutes)
  • Most users ever online was 292 on Mon Apr 23, 2012 3:19 pm
  • Users browsing this forum: No registered users and 0 guests