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# 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!

## Re: 48÷2(9+3) = ?

bionic wrote:I get 24..

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.

SmokinJoe

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## Re: 48÷2(9+3) = ?

Division is defined to be multiplication by the reciprocal...
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at1with0

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## Re: 48÷2(9+3) = ?

oh... it's two right? duh
I am such a flake..now more than ever, it seems
math genius material..I am not

heck..beauty school material, I am realizing I might not even be, at this point.
(she's even got the pink hair..lol)
“Whether you sniff it smoke it eat it or shove it up your ass the result is the same: addiction.”
― William S. Burroughs
(love&forgive yourself..and everyone else)

bionic

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## Re: 48÷2(9+3) = ?

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.

steve0339

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## Re: 48÷2(9+3) = ?

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"

at1with0

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## Re: 48÷2(9+3) = ?

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.

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

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## Re: 48÷2(9+3) = ?

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.

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"

at1with0

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## Re: 48÷2(9+3) = ?

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 .

Dragoness

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## Re: 48÷2(9+3) = ?

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

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## Re: 48÷2(9+3) = ?

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"

at1with0

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