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#1 2005-10-11 09:33:30

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,535

Make 28

I got a request by email from "yvonne" which asks:

im trying to see if i can make 28 out of 2 3 5 8 and using only + - % x can it be done thank you


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

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#2 2005-10-11 10:28:05

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

Re: Make 28

Lemme think.


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.

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#3 2005-10-11 10:44:45

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

Re: Make 28

2 + 8 = 10 x 3 = 30
- 5% = 28.5

That's the closest I got.


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.

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#4 2005-10-11 19:11:57

ganesh
Moderator
Registered: 2005-06-28
Posts: 13,835

Re: Make 28

I don't know if its allowed:-
38 - (2 x 5)


Character is who you are when no one is looking.

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#5 2005-10-12 05:07:43

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

Re: Make 28

I don't think it'd be allowed, but I ammended mine.

I used 8 twice. ¬.¬


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.

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#6 2005-10-12 23:04:15

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

Re: Make 28

(5 - (3/2))*8 = 28.

Go me.


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

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#7 2005-10-13 06:12:50

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

Re: Make 28

Silence!


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.

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#8 2005-10-18 18:42:52

insomnia
Real Member
Registered: 2005-03-23
Posts: 944

Re: Make 28

Look zach, you're not the best at maths just face.


Friends are angels who lift our feet when our own wings have trouble remembering how to fly

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#9 2005-10-18 20:15:30

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

Re: Make 28

Look, insomnia, you're not the best at re-reading your posts just face.

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#10 2005-10-18 21:23:28

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,535

Re: Make 28

LOL ... this is just getting.


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

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#11 2005-10-18 21:37:00

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

Re: Make 28

I know...but maybe it's just.

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#12 2005-10-18 21:39:00

insomnia
Real Member
Registered: 2005-03-23
Posts: 944

Re: Make 28

I do re-read my posts but can never be asked to edit them. My post is supposed to say:

Look Zach, you're not the best at maths, just face it.


Friends are angels who lift our feet when our own wings have trouble remembering how to fly

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#13 2005-10-18 21:43:10

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

Re: Make 28

But now that you're a mod you can secretely edit them... in the forums you moderate. Which isn't this one. So I'll let you off. big_smile

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#14 2005-10-19 00:44:26

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

Re: Make 28

Yes, secretely editing things is fun. Oops, I'm supposed to be silent.
[Zach is power-crazed]


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

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#15 2005-11-27 07:30:55

Wanna be math wiz
Member
Registered: 2005-11-24
Posts: 38

Re: Make 28

mathsyperson wrote:

(5 - (3/2))*8 = 28.

Go me.

Mathsyperson is division allowed? 

i thought you could only use +-%x?


Imagination is more important than knowledge

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#16 2005-11-27 08:02:17

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

Re: Make 28

I assumed that when "yvonne" said %, she meant ÷, because % can't be used in any useful way anyway.


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

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#17 2005-11-27 09:16:52

Wanna be math wiz
Member
Registered: 2005-11-24
Posts: 38

Re: Make 28

yeah your right, was just wondering.


Imagination is more important than knowledge

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#18 2005-11-27 10:08:26

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

Re: Make 28

OK then, wondering is good. Nice avatar and signature, by the way.


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

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#19 2005-11-28 08:34:08

Wanna be math wiz
Member
Registered: 2005-11-24
Posts: 38

Re: Make 28

thanks mathsyperson smile


Imagination is more important than knowledge

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#20 2005-11-29 04:21:17

Wanna be math wiz
Member
Registered: 2005-11-24
Posts: 38

Re: Make 28

you got a good signature too


Imagination is more important than knowledge

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