Math Is Fun Forum

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

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#277 Re: Dark Discussions at Cafe Infinity » Happy two years of mathaholic! » 2014-12-05 22:50:16

mathgogocart, I'm always here whenever you need me. I have committed my service here in this forum.

#278 Re: Dark Discussions at Cafe Infinity » Happy two years of mathaholic! » 2014-12-02 20:47:19

Thank you, everybody. Wish for more fruitful years to come! God bless us all!

#279 Science HQ » When would the eight planets line up? » 2014-11-29 14:45:39

mathaholic
Replies: 12

If you have a theory or calculation about the title, you may do so here.

My current hypothesis:
Mercury
Revolution period: 0.24 Earth Years (87.97 Earth Days)
Venus
Revolution period: 224.7 Earth days
Mars
Revolution period: 686.93 Earth days
Jupiter
Revolution period: 11.86 Earth years
Saturn
Revolution period: 29.46 Earth years
Uranus
Revolution period: 83.75 Earth years
Neptune
Revolution period: 163.72 Earth years
Earth
Revolution period: 365.26 Earth Days


Could it be every 1 340 185 years 122 days 17 hours 59 minutes 16 seconds 800 milliseconds?

Long, right?

#281 Dark Discussions at Cafe Infinity » Happy two years of mathaholic! » 2014-11-29 14:35:19

mathaholic
Replies: 23

It was November 30, 2012 when I first posted and committed myself here in this math forum.

Now, I have posted over 2,875 posts of quality.

Now, here we are with 2 fruitful years! Celebrate with me!

#287 Re: Dark Discussions at Cafe Infinity » Two years of mathaholic in two weeks! » 2014-11-15 12:21:51

'FLASHBACK 2' Add 99 more and post it forever.

A sequel to the add 13 game, here comes the add 99 game! Created December 8, 2012, this is the topic mathaholic has with the most replies, 1,532 of them. Why not add some more to this big game?

#288 Re: Puzzles and Games » Cube it! » 2014-11-15 12:08:07

9 938 375 = 215 ^ 3

Almost ten million!

#292 Dark Discussions at Cafe Infinity » Two years of mathaholic in two weeks! » 2014-11-14 17:31:25

mathaholic
Replies: 22

Well, we all know that it is just November 15, right?

Also, we know that my anniversary is coming up on November 30, Sunday.

As a preparation, I have posted this "2" avatar of mine, meaning two fruitful years of becoming a loyal forummer, here at least.

On the coming days, I will post links to several topics for a flashback.

'FLASHBACK 1' Banned. Why are people banned?
mathaholic: I really want to know why a person in MIF is banned. Everything needs a reason, especially in banning. MathsIsFun, I suggest this.

I have posted this because I wondered how people got banned. I really don't know that time if they don't state reasons for banning, or what?

Comments?

#294 Re: Dark Discussions at Cafe Infinity » Math competition... » 2014-11-14 12:41:53

Critical thinking questions, problem solving, computation.

#295 Re: Dark Discussions at Cafe Infinity » Math competition... » 2014-11-08 21:54:22

Hundreds... and only three are available to win, gold, silver and bronze.

By the way, the competition was challenging, and I'll see the results by next week

#296 Re: Dark Discussions at Cafe Infinity » Math competition... » 2014-11-07 23:12:22

I stand corrected... there will be a competition tomorrow and next week.

But, thanks everybody, I will do my best!

#297 Dark Discussions at Cafe Infinity » Math competition... » 2014-11-06 22:01:15

mathaholic
Replies: 14

Hello everyone, on Sunday I will be semi-offline for a math competition.

Also, I would be offline on November 22.

Just to inform you...

#299 Re: Puzzles and Games » Best of mathaholic » 2014-11-04 21:36:33

I know... I just want to see if Agnishom can answer.

#300 Re: Puzzles and Games » Best of mathaholic » 2014-11-04 21:24:22

Assume p99 as the 99th prime number. p means "prime". So, find the 99th prime number.

I repeat the question, 4. 7 + p99

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