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#1 Re: Maths Is Fun - Suggestions and Comments » Chess » 2017-07-23 05:32:12

Hmmm... all I have to say is that Garbochess seems like a misnomer.

#2 Re: Help Me ! » Increasing and decreasing concept » 2017-06-30 02:57:57

Zeeshan 01 wrote:
aditya wrote:

Bob,Did you become the administrator? Congratulations, bob for your promotion!.

WHAT IS THIS???

It's not an enigma, Zeeshan. Aditya is simply indicating his surprise that Bob is now the Administrator.

#3 Help Me ! » Help with geometric proof » 2017-05-31 12:35:14

Mathegocart
Replies: 1

eZsZNU3.png
18. SR is perpendicular to RT, TU is perpendicular to US, and SR is congruent to TU. I've been trying  to prove that triangle TRS is congruent to SUT, though I haven't been able to find an appropriate proof. Could anyone help?

#4 Help Me ! » Silly Triangle Similarity Problem.. » 2017-05-16 12:40:22

Mathegocart
Replies: 1

I was doing a practice problem..
taxagEn.png
After drawing an extensive diagram, I found that all triangles were similar. However, the question asks for two triangles that may NOT be similar.
Sorry.. feeling sick.

#5 Help Me ! » Conbinatorics Enigma » 2017-04-09 16:14:30

Mathegocart
Replies: 1

In a sports league, there are 20 total teams, divided into 4 divisions of 5 teams each. Over the course of a season, each team plays each of the other teams in its own division 3 times, and each of the other teams in the other divisions twice. How many games does the league have in a complete season?

I said 348 games(12*4)+(150+100+50)=348
(the a.p of 150,100, and 50 comes from a team playing the other divisions twice multiplied by 5(there are 5 teams within each division)
The official solution says 420.
Is it possible to derive 420 utilizing a method similar to mine?

#6 Re: Help Me ! » Logarithmic Problem » 2017-03-30 14:56:03

Your method should compose of a list of steps such that the last one ends in AB = (number)

#7 Help Me ! » Logarithmic Problem » 2017-03-30 14:35:53

Mathegocart
Replies: 3

I have been stuck with this enigma for minutes now..
12. Suppose A and B are positive real numbers such that logA(B)=logB(A). Algebraically prove the value of AB. A does not equal B, and neither A nor B = 1.
My thoughts: change of base formula could be useful, but I have been utilizing it for minutes now and it always seems to coverge to log(a)=log(b) which is useless.

#8 Exercises » A Medley of Melodramatic Problems » 2017-03-19 14:39:18

Mathegocart
Replies: 1

1.If gif.latex?abcd%3D25%21, then what is the minimum of a+b+c+d?
2.   What is the minimum of gif.latex?%28x+1%29%5E2+%28x-1%29%5E2+%28x+2%29%5E2+%28x-2%29%5E2+%28x+4%29%5E2+%28x+5%29%5E2
3. Find the least positive integer n such that n and n+1 have prime factorizations of exactly 5(not necessarily distinct) prime factors.
4.Ted flips five fair coins. The probability of Ted getting more heads than tails is m/n where m and n are relatively prime. Find m+n.
5. What is gif.latex?2%5E%7B2245%7D+3%5E%7B2%5E%7B15%7D%7D+5%5E%7B14%7D mod 14?
6.gif.latex?%5Cfrac%7B1%7D%7B2%5E2%7D+%5Cfrac%7B2%7D%7B3%5E2%7D+%5Cfrac%7B3%7D%7B4%5E2%7D+%5Cfrac%7B4%7D%7B5%5E2%7D+%5Cfrac%7B5%7D%7B6%5E2%7D+%5Cfrac%7B6%7D%7B7%5E2%7D
7. Alice chooses 1 positive integer from the set [1,1000]. She chooses another number from that set. What is the probability that the Harmonic Mean + the Arithmetic Mean of these 2 numbers is greater than 510?

#9 Re: Help Me ! » Geometry Angle Problem » 2017-03-15 06:57:35

bobbym wrote:

Hi;

Get better fast and when you grow up move to a warmer climate like Florida.

bit of trig and geometric innovation

Unnecessary! You can solve for the angle at A easily. Lots of times when those types pose problems the only way they can make it difficult is by providing misleading diagrams. You can defeat that by drawing a good diagram. Either you can call forth the powers of Giotto within or you can use the Gebra.

My headache is alleviating a little bit, atan(10/4).

#10 Help Me ! » Geometry Angle Problem » 2017-03-15 00:41:09

Mathegocart
Replies: 4

KlDhezQ.png..
I am supposed to find angle A with a bit of trig and geometric innovation.. but as my flu has only abated now, I have only made these observations..

#11 Re: Help Me ! » Harry Potter and the Age of Man » 2017-02-26 10:25:43

Humans are within 67% in sentence 14,896.

#12 Re: Help Me ! » Harry Potter and the Age of Man » 2017-02-26 09:50:59

I would, I've seen the mistake committed in here.

#14 Re: Help Me ! » Harry Potter and the Age of Man » 2017-02-26 09:32:08

Humans appear on year 4,539,900,000, so (4,539,900,000)/(304,780) = 14895.662445    i.e, the 14,895th sentence

#15 Help Me ! » Harry Potter and the Age of Man » 2017-02-26 01:07:14

Mathegocart
Replies: 9

Hello my fellow beneficiaries... I'd like to confirm my solution to this problem
The best estimate for the age of the Earth put it at 4.54 billion years. Modern humans have been here for 100,000 years. Harry Potter and the Deathly Hallows has 784 pages, and each page has 19 sentences. If the Earth's existence, all 4.54 billion years of it, were on a 784 page book with 19 sentences per page, on what sentence and page would humans appear on?
Through a proportion:


we obtain that humans appeared on the 14,895th sentence and the 783rd page.
Correct?

#16 Re: Help Me ! » Toothpick problem: » 2017-02-16 06:11:59

thickhead wrote:

Perhaps I meant- why doesn't my strategy work?

#17 Re: Help Me ! » Toothpick problem: » 2017-02-15 22:50:18

bobbym wrote:

Hi;

I do not understand the question. How do you know how many rows there are? Or how many columns?

#18 Help Me ! » Toothpick problem: » 2017-02-15 14:52:01

Mathegocart
Replies: 8

Anyhow I solved this problem:
We connect dots with toothpicks in a grid as shown in Figure 1.14. If there are 10 horizontal toothpicks in each row and 20 vertical ones in each column, how many total toothpicks are there?
ee8309c2c96c143eddcf6169511ac63ad9979235.png
The ans says 430 toothpicks, but I my method does not concur, for some peculiar reason.
Here's how I did it: The first row of squares contains 31 toothpicks, additional ones add 21 toothpicks. Since we add 9 more, 21*9=189, so 189+31=220 toothpicks. I feel like I'm missing something crucial, but I can't figure it out currently.

#21 Re: Help Me ! » Beach volleyball - how many combinations of 5 pairs can I make from 10 » 2017-02-08 14:17:14

bobbym wrote:

Hi;

I coach beach volleyball. We field 5 pairs of athletes. How many possible combinations of 5 pairs I can make from 10 athletes?

Another GF?

#22 Re: Help Me ! » Intriguing Combinatorics problem » 2017-02-05 00:49:18

My code was:

                which generated these quintuplets..

#23 Re: Help Me ! » Intriguing Combinatorics problem » 2017-02-04 15:33:44

THat should be enthralling, let me code it tomorrow. ahhahah an A8-6410....

#24 Re: Help Me ! » Intriguing Combinatorics problem » 2017-02-04 15:08:10

What are the specifications of your desktop? I am still currently thinking of the solution(late here), did you use generating functions?

#25 Re: Help Me ! » Intriguing Combinatorics problem » 2017-02-04 12:17:57

nice? quite inelegant but gets the job done.

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