Simple but fun math problem

I heard this on a podcast, I won't say which one in order to discourage people from looking up the answer.Place three digits, 2, 7 and one other, in an expression that equals 8. You can use +, -, *, / and exponentiation. Decimal points and parentheses may be used freely, but each digit may only appear once in the expression. Do this nine times where the remaining digit is 1 through 9. When you're done you'll have 9 expressions, each consisting of only three digits (2, 7 and the remaining digit of 1 through 9) and all equal to 8.For example, when the third digit is 1, the expression is: Now find the remaining 8 expressions.--Percy

I can't even think of one... I can't understand how this is simple for anyone.
Though, I barely passed short mathematics in upper secondary school

Here's two simple ones...{2*7} - 6 = 8
{7-2} + 3 = 8

I think I have them allSPOILERSPACE (highlight the blank area to see it)

7+(1^2)=8
(2/2)+7=8
(7-3)*2=8
2^(7-4)=8
This next one is based on my tenuous understanding of Percy's 'Dot' hint, so it might be mathematical nonsense...
(7-...-5)^2=8
(7*2)-6=8

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72/9=8

END SPOILERSPACEHi Percy, if you could tell me exactly what the HTML code is for the colour of the message background I can hide my spoiling better. At the moment I'm using #214666 but I'm not sure how close it is.*ABE* I'll keep working on those missing ones*ABE*TTFN,WKEdited by Wounded King, : No reason given.Edited by Wounded King, : No reason given.Edited by Wounded King, : No reason given.Edited by Wounded King, : No reason given.Edited by Wounded King, : No reason given.

One easy way to hide things is to use this approach: People can click on "peek" to see the hidden text.It looks like you've provided an additional solution for 1, three solutions for 3 (one of which is incorrect), two solutions for 9, and no solutions for 4, 5, 7 or 8.--Percy

I didn't appreciate that you wanted 1 solution for each of 1-9.TTFN,WK

Oh, I thought you could only change the last -/+ mark. No wonder it felt impossible.

Just so people realize what WoundedKing is doing, he's filling in the answers in the blank space as he figures them out.Edited by Percy, : Clicked too soon.

are stumping me...

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Of course, biblical creationists are committed to belief in God's written Word, the Bible, which forbids bearing false witness; --AIG (lest they forget)

Dots are good, and be devisive.--PercyEdited by Percy, : Wrong hint.

271 - 7+2-1
272 - 7+2/2
273 - 7+3-2
274 - 2^(7-4)
275 - .5*2+7
276 - 2*7-6
277 -
278 - .2+7+.8
279 - 72/9

8 of 9

Just realised that this question can be done with 0 as well. Highlight the text below for the cheeky answer:________________7 + 2^0 = 8________________Edited by Zawinul, : No reason given.Edited by Zawinul, : No reason given.

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7 + (2/2) = 8
7+3-2= 8
2^(7-4)=8
(.5 * 2) + 7 =8
(2 * 7) - 6 =8
2 7 7 =8
7.8 + .2 = 8 (7+9) / 2=8
Still thinking about 5 and 7...edit: just 7 now...peek to see.Edited by Modulous, : No reason given.

hey WK--it takes a good boacklight and good light conditions to see them. First I saw them, I was in laptop mode, so virtually no backlight, and couldn't see them. now I can. but just so slightly.

I've got 0 through 9, except for 5 and 7. Does this count for 8?:7.2 + .8 = 8