Math Is Fun Forum

vimal

Member

Registered: 2010-06-22

Posts: 7

find the answer pls

using each sign at least once 7 7 7 7 7 7 7 7=14

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

using each sign at least once 7 7 7 7 7 7 7 7=14

You mean + - * / or just + -. Between each 7?

Maybe something like this:

7 / 7 * 7 - 7 + 7 - 7 + 7 + 7 = 14

---

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.

vimal

Member

Registered: 2010-06-22

Posts: 7

Re: find the answer pls

thnaks bobbym for provide me answer, but u used + sign 3 times and - 2 times though it should be used only once..

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

Okay, I will try to recompute. But I can't guarantee there is an answer. Your problem says at least once, that means 1 or more. Also you have 7 spots for 4 operators so you are going to have to concantenate some sevens. That is also not in the rules you provided.

---

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.

vimal

Member

Registered: 2010-06-22

Posts: 7

Re: find the answer pls

humm.. thats why i have no answer, but we can user ( ) also..

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

Are you sure you have the right problem? I am coming up blank here.

---

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.

vimal

Member

Registered: 2010-06-22

Posts: 7

Re: find the answer pls

Are you sure you have the right problem? I am coming up blank here.

Fill in the blanks using addition, subtraction, multiplication and division signs, using each sign at least once, to make the equation true: 7 7 7 7 7 7 7 7=14.
[unquote]
this is the complete question...

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

Hi;

But the at least once means one or more. Your restriction of just once is probably too strict. Still looking though.

---

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.

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: find the answer pls

... x (7-7) + 7 + 7

With that ending, you can do whatever you like to the start.

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Why did the vector cross the road?
It wanted to be normal.

vimal

Member

Registered: 2010-06-22

Posts: 7

Re: find the answer pls

thanku bobbym..
I got clue from your answer.
Now I can solve it.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

thnaks bobbym for provide me answer, but u used + sign 3 times and - 2 times though it should be used only once..

Would you like to show me! Remember you said no repetitive operators.

---

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.

vimal

Member

Registered: 2010-06-22

Posts: 7

Re: find the answer pls

sorry !!
Whatever u wrote in your first answer that was correct. I could not understand question well, thats why i created problem for me as well as for you. I have written full question to you. Beside that I have no other information. As you wrote we can use sign many time but we have to use atleast one sign.

Tthanks and Regards
Vimal.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find the answer pls

No problem. And welcome to the forum! There are a lot of solutions with the original rules, mine is just one.

---

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.