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

You are not logged in.

#4 Re: Puzzles and Games » You rang, mallard? » 2015-05-17 17:27:06

First of all, I'm sorry but I think we should place this at Cafe Infinity.

Second, well I think his butt is sore after sitting down there. So he wanna cross the street. BTW, do you know Crossy Road?

#6 Re: Dark Discussions at Cafe Infinity » What does the future hold in store for mankind and the world? » 2015-05-03 17:18:15

math9maniac wrote:

Do you at times wonder what the world will be like in a certain number of years? Things getting worse or better?

I always daydream about this. I even have songs in my phone that make me think I'm in the future.

#9 Introductions » Just wanna say hi again » 2015-05-03 17:05:09

Replies: 4

It has been very weird that I go inactive a lot of times. I just have been so active in other websites. Now I just need to balance these activities that I need to do. So, hi.

#12 Re: Puzzles and Games » Mathemagic » 2015-04-05 17:21:08

math9maniac wrote:

Pick any 4-digit number at all (should not have the same digit throughout). Rearrange the digits to form as many 4-digit numbers as possible. From the range of numbers (including the one you first picked), subtract the least from the greatest. If the difference is a 2-digit number add the digits together.

The idea behind this is no matter what your answer will always be 9. Yes try it now.



1234 1243 1324 1342 1423 1432
2134 2143 2314 2341 2413 2431
3124 3142 3214 3241 3412 3421
4123 4132 4213 4231 4312 4321


Well, it's 4 digits but I'll go add it... 3+0+8+7 = 18 (1 + 8) = 9.

Worth that 10 minute typing. BTW, the name of the topic reminds me of a book I borrow in the library at my school. smile

#13 Dark Discussions at Cafe Infinity » Well, long time no see again? » 2015-04-05 17:15:43

Replies: 1

Yeah, I know that it drags to not see you guys again for a long time, and I still hope you remember me. Well, in our place it's summer already, so I will get more active for two months, or even three.

So, I will get those posts counting it's been a long time stuck in the 2000's.

#16 Re: Dark Discussions at Cafe Infinity » Happy new year! » 2015-01-14 18:10:25

Late post. Can someone close this topic now?

#22 Dark Discussions at Cafe Infinity » Happy new year! » 2014-12-31 16:53:54

Replies: 7

It has been a great 2014. Mathematically, 2015 is divisible by 13. But, we should still hope for a good year! Cheers

And, happy new year. smile

Board footer

Powered by FluxBB