A mathematical quiz

by **Pancake** » Thu Apr 14, 2011 20:48

Yep already saw this..
But for me it's still 2

@Davis. 42. Not 5. http://www.stupidedia.org/stupi/42

by **FALBIK** » Thu Apr 14, 2011 21:00

rolf ... my fail ...rly score finnish its 288

lul ... good im not teach in school :lol:

explain step by step

48/2*(9+3)

1.step 48/2*(9+3) rules= Actions in brackets
2.step 48/2*12 rules = If the expression occurs only divide or multiply and divide, this is performed in the order in which they are written from left to right.
3.step 24*12 = 288

by **landser** » Thu Apr 14, 2011 21:14

Ajit wrote:
landser wrote:48 / 2 (9 + 3)
48 : 2 x (9 + 3) |:2
24 : (9 + 3)
24 : 12
2

this is competely wrong maths

how can (9+3) |:2 still be (9+3)

48 : 2 * (9+3)
48 : 2 * 12 |:2
24 : 1 * 6
24 : 1 * 6
24 * 6
144

(9 + 3) =12
24 : 1= 24

beacuse of deviding it into 2, the answer is 2 times smaller

well, lets do it this way:

48 : 2 = 24;
2 x (9 + 3) : 2 = 1 x (9 + 3) = 12;

its kind of the counterpart to:

48 : (18 + 6) = 48 : 2 * (9 + 3)
like:
48 : (18ab + 6ab)
= 48 : 2 (9ab + 3ab)
= 48 : 2ab (9 + 3)
= 48 : (18ab + 6ab)

the "2" belongs to the brackets!
its like:
48 guys want to move 2 beerboxes:
48people devided on 2beerboxes
48 : 2b
b = beer or 12

btw at google counter: i enter 48/2(9+) and it returns me:
(48 / 2) * (9 + 3) = 288
it is adding brackets (!!!)

btw, i got a counter where i enter 48 : 2 * (9+3) and it returns me 2. and this counter it idiot proof, trust me i tryed it.

by **Ajit** » Thu Apr 14, 2011 21:18

landser wrote:btw, i got a counter where i enter 48 : 2 * (9+3) and it returns me 2. and this counter it idiot proof, trust me i tryed it.

shit counter

try 48:2*12 thisone cant be 2 xD

by **Death** » Thu Apr 14, 2011 21:20

davies wrote:The answer is 5.

!ban davies -> dumbass

This topic is epic and Ajit and I are completely correct :roll:

by **Ajit** » Thu Apr 14, 2011 21:22

Death wrote:
davies wrote:The answer is 5.

!ban davies -> dumbass

This topic is epic and Ajit and I are completely correct

I are correct! Must be new language also in this topic

by **landser** » Thu Apr 14, 2011 21:23

Ajit wrote:
landser wrote:btw, i got a counter where i enter 48 : 2 * (9+3) and it returns me 2. and this counter it idiot proof, trust me i tryed it.

shit counter

try 48:2*12 thisone cant be 2 xD

we got the solution:

48 : 2 * 12 = 288
48 : 2 * (9 + 3) = 288
48 : 2 (9 + 3) = 2

the non existing * between 2 and (9... means the 2 is refering to the bracket, the existing * is not.

by **Death** » Thu Apr 14, 2011 21:28

Here is your proof... with and without the * mark ...

by **Ajit** » Thu Apr 14, 2011 21:29

Hahahahha

nice one death xD

by **landser** » Thu Apr 14, 2011 21:34

thats what i call a bad counter, death

do this with your counter:

get me solution on this formula:

http://www.mikrocontroller.net/attachme ... chnitt.JPG

the one with the root of 1 - alpha ...

alpha = 45 degrees

EDIT: without setting any brackets!

by **Ajit** » Thu Apr 14, 2011 21:35

landser wrote:the "2" belongs to the brackets!

no it doesnt

if it's "48/[2(9+3)]" then "2" belongs to brackets but its out of brackets "48/2(9+3)"

by **Death** » Thu Apr 14, 2011 21:35

I cant really see the point in even trying ^^

by **deep** » Thu Apr 14, 2011 21:40

by **Ajit** » Thu Apr 14, 2011 21:42

do not use calculators

use brains, cmon

TI-85 is older that TI-86

D

by **Death** » Thu Apr 14, 2011 21:47

Ajit wrote:TI-85 is older that TI-86 D

Thought the same thing ... 85 was created by landser .. 86 by me and ajit

by **deep** » Thu Apr 14, 2011 21:54

Ajit wrote:do not use calculators use brains, cmon

TI-85 is older that TI-86 D

Cmon I found it on the internet

.

by **Pancake** » Thu Apr 14, 2011 21:54

Death wrote:
Ajit wrote:TI-85 is older that TI-86 D

Thought the same thing ... 85 was created by landser .. 86 by me and ajit

I guess I produced the processor ^^

by **deep** » Thu Apr 14, 2011 21:58

It is 288.

Now stop the spam

.

by **landser** » Thu Apr 14, 2011 21:59

The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3).

So this can be rewritten as:
48 / (2*9 + 2*3)

Which leaves us with

48 / 24 = 2

Answer = 2.

Lastly for those using Google or any other online calculator. These do not understand many theorems or properties so you must explicitly explain what you mean. There is a difference between 48 / 2 * (9+3) and 48 / 2(9+3). The first notation reads 48 / 2 * 1(9+3) while the second reads 48 / (2*9+2*3). Be very careful with your signs.

quote from yahoo answers, my point.

by **Fefe** » Thu Apr 14, 2011 22:13

288 ofc

by **Pancake** » Thu Apr 14, 2011 22:14

Diamond wrote:It is 288.

Now stop the spam .

It is 2. ^^

And it is Fun & Nonsense Corner

by **Death** » Thu Apr 14, 2011 22:19

Landser your yahoo answer thingi has a point but imo only when the second part of the sum is seen as a sum on its own, imo it takes 2(9+3) and 48/ X as seperate sums.

Therefore it is wrong and the answer still is 288!!!

i might be wrong but im no mathmatician xD

by **Ajit** » Thu Apr 14, 2011 22:20

i give up, doesnt matter im in strongest maths school in Estonia and maths avarage exam was 91.29

by **landser** » Thu Apr 14, 2011 22:37

Death wrote:Landser your yahoo answer thingi has a point but imo only when the second part of the sum is seen as a sum on its own, imo it takes 2(9+3) and 48/ X as seperate sums.

Therefore it is wrong and the answer still is 288!!!

i might be wrong but im no mathmatician xD

ya, i only get 2 because i see 2(9+3) as 1 expression instead of 2.

now the question is: is this right?

i think ya, because you can perform this:

25 + 100 || shorten it
= 5 (5 + 20)
both is 125 and its a correct way of doing senseless mathematical stuff.

if we now add it to division thingy:
1250 : (25 + 100) = 10
1250 : 5 (5 + 20) = 10

from this point you did:
1250 : 5 = 250
250 (5 + 20) = 6250 instead of 1250.

the 5 (5+20) stands for 5 times the amount of 25 and does not need any brackets allthough it would be helpfull.

same like in our 48 : 2(9+3)
it is the doubleamount of 9+3.
this has to be solved prior to the division.

by **Death** » Thu Apr 14, 2011 22:57

landser wrote:1250 : (25 + 100) = 10
1250 : 5 (5 + 20) = 10

from this point you did:
1250 : 5 = 250
250 (5 + 20) = 6250 instead of 1250.

the 5 (5+20) stands for 5 times the amount of 25 and does not need any brackets allthough it would be helpfull.

Here you are wrong... these are 2 different sums.

1250 : 125 = 10
and
1250: 5 = 250 ---- 250* (25) = 6250

The way you see the sum is like this 48/ (2*(9+3))
But the extra () arent there in the original sum, therefore you cant just go add them, if you add them and then calculate it you indeed get 2 as a result but the extra () arent in the original sum therefore i stick with my answer 288

You see the second sum you created as 1250: (5*(5+20)) but again .. the extra () arent in the original sum, you can have 2 different outcomes but then you will have to create 2 different sums , 1250/5*(5+20) and 1250/(5*(5+20))

A mathematical quiz

48/2(9+3) =

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