Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Random_blonde****Member**- Registered: 2005-05-26
- Posts: 4

Hi peoples. Ma name is Lindasy Clements and i live in New Zealand. I love maths but hate the teachers who teach it cuse they make it so boring. I also love makeup, mini skirts and BOYS!!! But soz but im taken or will be as soon. I have just one problem. I have this homework that i have to make 9 using four 6's and ONLY using the plus, minnus, times and divide if andone can do it plz get it to me. Thax

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

Oooohh .. a PUZZLE !

(6*6+6)/6 = 7 ...no

(6+6)/6 + 6 = 8 ...no

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

I tried dozens of combinations and none of them work ... it may be impossible to do following those instructions!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

(6 + 6) \ 6 + 6 = 8

(6 - 6) x 6 + 6 = 12

((6*6) +6)/6 = 7

(6+6+6)/6 = 3

(6*(6+6) / 6 = 12

Going on, etc. It'll not work. The Maths is right.

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**cool_me****Member**- Registered: 2005-05-26
- Posts: 11

i hve too tried a dozen of combinations and i kept trying for 2 hrs. its not working!

i dont think its a correct ques! better check it again and then tell us. if this is d ques then it is impossible to do.

FOR SURE!

Offline

**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

I think that's impossible, because straight off I realised that you are only working with numbers in the 6 times table, no matter what you do. Is nine one of them?

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

9's not in the 6 times table. Numpty. But, if there were 5 6's, I expect I could get it to work...

(6+6+6/6) +6 - That's for 5 of them, but, bleh.

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

Well, we had fun trying. But this one is headed for the circular file.

I hope random_blonde can tell us what her teacher reckons the answer is.

Probably involves standing a 6 on its head

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

i have the solution.

I come back stronger than a powered-up Pac-Man

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**Ceno****Member**- Registered: 2005-06-04
- Posts: 1

MathsIsFun wrote:

I tried dozens of combinations and none of them work ... it may be impossible to do following those instructions!

Nothing is really impossible in life but in maths that is the hard thing about their is only one answer and quite a lot of things are impossible in MATHS!!!!!!!!!!!

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

Interesting point, Ceno.

Yes, things can be impossible in maths when we set limits, such as how do you make 3 using 1 and 1.

But on the other hand, maths can reach outside our universe by happily dealing with multiple dimensions, infinite speed and things like that.

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

yes but they aren't *real* are they

I come back stronger than a powered-up Pac-Man

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

But how do you know, Mr T?

An electrical engineer was able to use "imaginary numbers" to prove that a seemingly normal circuit would in fact blow up. Noone believed him because it wasn't *real*. They connected up the circuit, and *foop*. THEN they believed him. Maths had seen outside the normal experience.

(An "imaginary numbers" is based on the square root of -1. What is the square root of -1?)

Offline

**Roraborealis****Member**- Registered: 2005-03-17
- Posts: 1,594

Um, undefined.

School is practice for the future. Practice makes perfect. But - nobody's perfect, so why practice?

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

"Math Error"

But, "imaginary numbers" are defined as 'J'

Boy let me tell you what:

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

important thing here...not *real*

I come back stronger than a powered-up Pac-Man

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Zach wrote:

"Math Error"

But, "imaginary numbers" are defined as 'J'

or even 'i'

Why did the vector cross the road?

It wanted to be normal.

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

Mr T wrote:

important thing here...not

real

Yes, that is what is so interesting. Maths goes beyond what **we** think is real, and shows us a reality far exceeding our normal experience. Every so often this new reality shows us a new thing about our normal life.

Offline

**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

MathsIsFun wrote:

What is the square root of -1?

1i

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,685

The "i"s have it

Yes, the classic way to show an "imaginary number" is to use an i (or sometimes a j).

So, 4i is 4 times the square root of -1

And a "Complex Number" is one that includes "Real" and "Imaginary" numbers. So, for example **2 + 3i** is a complex number.

Offline

**Mr T****Member**- Registered: 2005-03-30
- Posts: 1,012

but it is not *real*

I bought a large popcorn @ the cinema the other day, it was pretty big...some might even say it was "large

Fatboy Slim is a Legend

Offline

**Zach****Member**- Registered: 2005-03-23
- Posts: 2,075

Neither is a jellyfish which can speak three hundred european languages, do you hear anyone complaining?

I bet you didn't know it, but I'm a fiddle player too.

And if you'd care to take a dare, I'll make a bet with you.

Offline

Pages: **1**