48÷2(9+3) = ? | Page 2 | Questions that make you think... | Forum

A A A
Avatar

Please consider registering
Guest

Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

Register Lost password?
sp_Feed sp_TopicIcon
48÷2(9+3) = ?
Avatar
SmokinJoe
Member
Members
Forum Posts: 365
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
106384
July 14, 2012 - 7:23 am
sp_Permalink sp_Print

"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.

Avatar
at1with0
Member
Members
Forum Posts: 9242
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
106447
July 15, 2012 - 6:18 am
sp_Permalink sp_Print

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

"it is easy to grow crazy"

Avatar
bionic
Member
Members
Forum Posts: 9877
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
106562
July 17, 2012 - 10:01 pm
sp_Permalink sp_Print

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)
http://www.youtube.com/watch?v.....RVAT2QSpmo

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

Avatar
steve0339
Member
Members
Forum Posts: 9
Member Since:
November 28, 2012
sp_UserOfflineSmall Offline
112750
February 5, 2013 - 7:43 pm
sp_Permalink sp_Print

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.

Avatar
at1with0
Member
Members
Forum Posts: 9242
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
112751
February 5, 2013 - 7:55 pm
sp_Permalink sp_Print

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"

Avatar
greeney2
Member
Members
Forum Posts: 10055
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
112835
February 7, 2013 - 10:55 pm
sp_Permalink sp_Print

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.

Avatar
at1with0
Member
Members
Forum Posts: 9242
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
112836
February 7, 2013 - 11:05 pm
sp_Permalink sp_Print

"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"

Avatar
Dragoness
Member
Members
Forum Posts: 118
Member Since:
January 11, 2013
sp_UserOfflineSmall Offline
112841
February 8, 2013 - 12:15 am
sp_Permalink sp_Print

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: 🙂 .

Avatar
greeney2
Member
Members
Forum Posts: 10055
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
112844
February 8, 2013 - 3:17 am
sp_Permalink sp_Print

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.

Avatar
at1with0
Member
Members
Forum Posts: 9242
Member Since:
April 9, 2009
sp_UserOfflineSmall Offline
112851
February 8, 2013 - 4:37 pm
sp_Permalink sp_Print

"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"

Forum Timezone: America/Los_Angeles

Most Users Ever Online: 288

Currently Online:
23 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

greeney2: 10055

bionic: 9877

at1with0: 9242

Lashmar: 5757

tigger: 4576

rath: 4332

DIss0n80r: 4161

sandra: 3858

frrostedman: 3815

Wing-Zero: 3283

Newest Members:

ZacharyjalFG

ecumo

obykik

ucehofeze

DennisclifyVA

ZennoboxDredaPS

delmetoajPY

RogeranyncAS

JasongamCI

JamesmogMK

Forum Stats:

Groups: 8

Forums: 31

Topics: 8197

Posts: 121614

 

Member Stats:

Guest Posters: 2

Members: 20614

Moderators: 0

Admins: 2

Administrators: John Greenewald, blackvault