Math Is Fun Forum

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Make 1,234 using the numbers 1, 2, 3, and 4 only

Can you do that? You can use any number up to two times only, and you have to use all the numbers. Okay? Any operations allowed, especially factorials, exponents, etc.

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Hi;

If we can use any operation then the answer is 1234, concantenation used on 1,2,3,4.

Without that operation, I am not finding any yet. Maybe there are none.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

I didn't get the answer, I made it up myself.

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Then we will go with the concat solution.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Okay. Your grade

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Thanks for that! But there might be another solution.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Oh.

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Uses all numbers exactly twice.

Hmmm. Now to try to do it using them once only. 

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

It's okay. I'll consider your solution.

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

It took several edits before my posted version looked like my paper version.  Final offering has a smiley face.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Oh.

This keeps me wondering;

Where did you get the avatar?

~Julian~

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

hi julianthemath

Where did you get the avatar?

I made it myself.

Made the still picture in Sketchpad, did a screen shot into Paint, then imported it to Flash and animated it as a GIF.

Hardest bit was getting it the right size (80 by 80) .

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Oh.

~Julian~

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Last edited by phrontister (2013-05-11 05:56:50)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

There are 1235 square roots in there.

Last edited by anonimnystefy (2013-05-11 12:57:24)

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“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

mathaholic

Member

From: Earth

Registered: 2012-11-29

Posts: 3,251

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Wow.

~Julian~

My secondary signature, ~Julian~, you noticed it?
I only use it when I talk to real members, moderators or admins.
My new practice

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Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Last edited by phrontister (2013-05-11 15:01:26)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Last edited by phrontister (2013-05-12 04:05:25)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,879

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

Last edited by phrontister (2013-05-12 05:52:42)

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"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Make 1,234 using the numbers 1, 2, 3, and 4 only

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.