 # 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 = ?

Home Forums Yeshiva / School / College / Education Issues 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 = ?

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• #1125368

gotbeer
Member

Using PEMDAS the answer is 4…..here is how: 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 =

You would first do 1 x 0= and get 0.

Then you add the 1’s till the minus sign (1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1) which is equal to 10.

Then you add what ever is left after the minus sign and get 6 (1 + 1 + 1 + 1 + 1 + 1).

Then you add the 0 to the 6 and you get 6.

Then you subtract 10 – 6=4……simple math !!!!!!

#1125369

gotbeer
Member

BTW, I used a regular calculator and got 14. However, if you would use a scientific calculator, then I believe the answer will be 4.

#1125370

haifagirl
Participant

gotbeer: It doesn’t work like that. With no parentheses, you don’t subtract 6, you subtract 1. In PEDMAS you do the division and multiplication from left to right, then the addition and subtraction from left to right. You don’t put in parentheses that weren’t in the original problem.

#1125371

Now that we’ve had over 50 comments discussing a fifth-grade math question entailing addition, subtraction and multiplication, perhaps we can move up a notch unto division:

Can we extend this for another 50 responses, debating this highly complex equation?

#1125372

yeshivaguy45
Participant

48,651

#1125373

I’m always amazed at the number of young Einsteins to be found on this board.

#1125374

MeemaYehudis
Member

Yeshivaguy beat me to it. I agree. 48,651.

#1125376

Curiosity
Participant

? ?(1+4t^2) dt

?

#1125377

Sam2
Participant

Curiosity: Where does a violin fit into a math problem? 😛

#1125378

ursketching
Member

YitB- i think it’s time to say the answer. everyone is making a fool out of themselves.

#1125379

Curiosity
Participant

lol Sam2… that’s not a violin! That’s obviously a cello!!!

It’s actually called an indefinite integral.

#1125380

Sam2
Participant

Curiosity: Not that it looks like a violin. All violins have the same greek letter to the sides of the strings at the bottom. I have no ideas if cellos do as well.

#1125381

Curiosity
Participant

They do, and I think they’re called “F-holes”, if I remember correctly. But seriously though, major brownie points to whoever can solve the integral and show their work 🙂

#1125382

WIY
Member

curiosity

I am no big mathematician so I googled the problem and was easily able to get the answer which I wont post.

#1125383

mattzerino
Participant

There is a thing called precedence of operations in algebra. In the lack of any type of parenthesis, the order is division, mult, subtraction and addition. First, you mult. Then all the adding stuff. Should come out to 14, on a good day. Is this an advanced Beis Yaakov arithmetic test, or what?

#1125384

Curiosity
Participant

Are you sure you didn’t find the answer to

? 1/(?(1+4t^2)) dt

Or

? dt/(1+4t^2)

? ?(1+4t^2) dt

? : ) I couldn’t find that particular one on Google, but there are (lengthier) ways of solving it, and programs that calculate anti-derivatives for you.

#1125385

OneOfMany
Participant

uhhh…something + C?

#1125386

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 x 0 = ?

Using PEMDAS, I started with 1 x 0. Automatically, that takes away that 1.

Then, all I did was just follow the line. Since I took the last 1 away, the problem looks like this:

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 = ?

I added 14 1’s and subtracted 1 as shown.

#1125387

RG3
Member

Go bck to school …whoops I mean college oh I forgot u didn’t go

#1125388

☕ DaasYochid ☕
Participant

You changed the question, so you got a different answer. The answer to the OP’s question is still 14.

If the question was “1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 x 0 = ?”, the answer would be 12.

#1125389

OneOfMany
Participant

Nu, Curiosity – did I get it right? ^_^

#1125391

sassy one
Member

? dt/(1+4t^2) = tar[r]^1(t)

#1125392

wastingtime
Member

=0 ppl r so bored

#1125393

ubiquitin
Participant

wastingtime Are you serious?

If so, wow just wow.

#1125394

x = y.

Then x^2 = xy.

Subtract the same thing from both sides:

x^2 – y^2 = xy – y^2.

Dividing by (x-y), obtain

x + y = y.

Since x = y, we see that

2 y = y.

Thus 2 = 1, since we started with y nonzero.

Subtracting 1 from both sides,

1 = 0.

#1125395

TheMusicMan
Participant

I believe the correct answer is Swiss cheese.

Or South Dakota.

#1125396

notoriouspre
Member

The correct answer is 4. 0x1= 0. Then there are 10 ones on the left of the subtraction sign. And 6 on the right side. Finally 10 minus 6 equals 4. Basic order of operations, and looking closely at the equation. You’re very welcome.

#1125397

oomis
Participant

Anything that is multiplied by zero, no matter how many digits it has = zero.

Unless there is a parentheses in there somewhere at the very end, in which case the answer would actually be a real number.

#1125398

just my hapence
Participant

gotbeer and notoriouspre – BODMAS (or, as you seem to call it in America, PEDMAS) is a list of 4 operations, not 6: 1. Brackets, 2. Other (indices, surds etc), 3. Division AND Multiplication 4. Addition AND Subtraction. When faced with a problem like the one above, do ALL the multiplications and divisions first, from left to right (unless the division is expressed as a fraction in which case deal with the numerator and denominator separately), then ALL of the additions and subtractions from left to right, not all the additions first then all subtractions. So in this case, first do the 1×0 as you said but then you do not add all the 1’s to the left of the subtraction sign and subtract all the 1’s to the right of it from them but rather you add all the 1’s to the left then subtract the 1 immediately to the right of the subtraction sign and then carry on adding all the 1’s.

#1125399

just my hapence
Participant

oomis – See above. Always do multiplications and divisions BEFORE additions and subtractions. So the only thing being multiplied by 0 here is the very last 1. You can add and subtract all the rest afterwards. Incidentally, 0 is also a real number.

#1125400

computer programs give the answer 14

#1125401

moishyk
Member

i got 14

#1125402

moi aussi
Member

Zero

#1125403

#1125404

oomis
Participant

Zero. Anything x 0 is always zero.

#1125405

ITS THIRD GRADE MATH!!!!!! HAVE YOU HEARD OF PEMDAS??? THIS IS SO PITIFUL!!

#1125406

DikDukDuck
Participant

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + (1 * 0) = 14

(1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + 1) * 0 = 0

#1125407

frumnotyeshivish
Participant

PulsingFlower- I see it as ignorance. The concept isn’t difficult. The issue is that many people have never come across the concept in a way that they remember. This shows a lack of schooling (or an awful memory, which perhaps might be pitiful, but it doesn’t seem that you were thinking along those lines), and lack of any real life experiences that require simple math rules. Many people have no need for such knowledge and live complete lives without it. I don’t see inherent value in knowing simple math rules, thus I have no pity for those who were never exposed to them.

#1125408

I made the same mistake. my math woes are well documented on this site ( see one of the Lakewood matzav threads where boruch Schwartz absolutely schooled me on some simple math thingy). when I see a math example, my attention gets divided, my misery gets added, and my pleasure gets subtracted. I used to think algorithims are statements attributed to a former vice president and global warming alarmist. its not ignorance, just nerves I get nervous and cant think straight

#1125409

I used to think algorithims are statements attributed to a former vice president and global warming alarmist. its not ignorance, just nerves I get nervous and cant think straight

Actually, that is ignorance.

#1125410

actually that was a bad pun

#1125411

gefen
Participant

I got 16

#1125412

✡onegoal™
Participant

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 = ?

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + (1 x 0) = ?

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 – 1 + 1 + 1 + 1 + 1 + 1 + (0) = ?

10 – 6 + 0 = ?

10 – 6 + 0 = 4

#1125413

frumnotyeshivish
Participant

Bump… For entertainment purposes. Anything times zero is zero, right?

#1125414

ari-free
Participant

You are all wrong. The answer to everything is 42!

#1125415

ari-free
Participant

OK seriously…

Yes anything times zero is zero. And if you have pq=0 then you know either p is 0 or q is 0 or both.

Another way to think about multiplication is that you are making combinations. If I had 3 colors and 4 shapes then I have 3×4 = 12 combinations of colored shapes.

But if I had 5 shapes and no colors I would have zero combinations of ‘colored shapes’ since…there are no colors.

And that’s the nice thing about multiplication, because you can take say velocity and time, multiply them together, cancel the units and get the distance.

#1125416

my own kind of jew
Participant

This is hilarious, in a sad sort of way

#1125417

oomis
Participant

It depends on how you perceive the last two numbers listed. ANYTHING you add or subtract and then multiply by 0, will always be 0. Unless the last two numbers were bracketed together as [1+0], which would actually be 1, the 0 becomes the multiplier, thus ending in a solution of…0 in this problem.

#1125418

ari-free
Participant

oomis sorry you are wrong. We have to follow the rules. You said

“ANYTHING you add or subtract and then multiply”

No we multiply first and then add!

So 1 + 1 X 0 = 1 because we first evaluated the multiplication of 1 X 0 = 0

So we have 1 + 0 and that’s 1

#1125419

ubiquitin
Participant

Oomis, the beauty of math is there is no such thing as “depends how you percieve it” there are strict rules as several posters have explained. following PEMDAS the answer is 14 ANY other response is simply wrong.

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