4's only

how many numbers in succession starting with zero can anyone do?
post you solutions
can anyone do the fist 15 or more?

+, -, x, /, (), ^, log, square roots, decimal points, factorials, double factorial, etc. are a few math symbols that can be used

Good luck!

Originally posted by lemondrop
how many numbers in succession starting with zero can anyone do?
post you solutions
can anyone do the fist 15 or more?

+, -, x, /, (), ^, log, square roots, decimal points, factorials, double factorial, etc. are a few math symbols that can be used

Good luck!

(4+4)-(4-4)=0 that was easy...

(4+4)-(4-4)=8
sorry ponderable

(4+4)=8
(4-4)=0
8-0=8

4!/sqrt(4) + 4/4 = 13

works for me
good job

4!=24
sqrt of 4=2
4/4=1
24/2=12 +4/4=1
12+1=13

anyone with a different solution?

Now we need 11...

11 is not that difficult
hint: use the square root function

Originally posted by Ponderable
(4-4)*4+4=4

To be clear, it should be ((4-4)*4)+4=4

Originally posted by forkedknight
4+(4-4)/4 = 4
4 + (4/4)^4 = 5
(4 + 4)/4 + 4 = 6

You need to get the parenthesis stuff right to be accurate, your (4+4)/4+4 could be taken as zero as it stands.

To be accurate you need (((4+4)/4)+4)=6.

or ((4+4)/4)+4=6, a bit simpler but it does come out as 6 as written, on my casio calculator.

The first example, 4+(4-4) could be taken as 4 then divide by 4 would be 1 if not clarified by parentheses, but as you wrote it, my calculator brings it out as 4.

.

Originally posted by lemondrop
4+(4-4)/4=1 not 4
your equation for the number 5 is also incorrect

He is getting those results running it through a Casio calculator or some other brand that uses the order rules. It comes out as four running through a casio.

It still can be taken as 1 by someone not following the same order rules.

I think it should be given with proper parentheses to eliminate such confusion.

Originally posted by forkedknight
4!/sqrt(4) + 4/4 = 13

If you do the math first, it works but I cannot enter it as shown on my casio calculator.

On my TI84 it doesn't seem to have a factorial function so I have to do it this way🙁(4*3*2)/(sqr(4))+(4/4) to get 13 which is cheating🙂

You could write a user defined program as a factorial and use that instead I guess. Surprised they didn't include factorial on the TI84.

I'll try it on my trusty rusty HP48, see what I get in reverse polish. Don't have time right now.

parentheses are absolutely necessary to avoid any ambiguity

Originally posted by lemondrop
parentheses are absolutely necessary to avoid any ambiguity

For sure! Otherwise there can by several interpretations of the outcome.

Like 4^4+4/4, is that 257 or 65?

If you want the outcome to be 65, you go (4^4+4)/4 (4^4=256 plus 4=260 /4 =65

If you want it to be outcome to be 257 you go (4^4)+(4/4) 4^4=256 plus 4/4, (1)=257.

Everyone needs to get up to speed on this issue.

so far we have:
0=44-44
1=44/44
2=(4x4)/(4+4)
3=(4x4-4)/4
4=(4x4)/((sqrt(4)+sqrt(4))

5=4+(4/4)^4
6=(4+4)/4+4
7=44/4-4
8=4-4+4+4
9=4+4+(4/4)
10=4+4+4-sqrt4
11=
12=4(4-4/4)
13=4!/sqrt(4)+4/4

11 is open for a solution