Math Community Quiz

[jnesselr]

Matrix M is correct.  The first column of Matrix K is correct.

Wow, Nemo just pointed out an obvious error.  I meant to say all but ONE were prime. My bad.

[nemo]

K = [[5 93][17 53]]
M = [[13 11][ 19 17]]

[jnesselr]

K = [[5 93][17 53]]
M = [[13 11][ 19 17]]

That's correct.  So I was basically an idiot. I was supposed to have it be "all but one" where prime for K. oh well nemo gets it.

[ruler501]

wish I had known that I've been bug checking so much...
Wonder what the next question will be???

[nemo]

if i'm traveling at a rate of 40 mph, my destination is 120 miles away and i've been traveling for two hours, how long until i reach my destination. just kidding you probably did that in your head as you read it. the real question is on the way, i'm currently solving it..


edit: the problem.

constituents:
2x2 matrix N
2x2 matrix P filled with ascending perfect numbers. i.e. if 1 2 3 and 4 were perfect numbers, P is [[1 2][3 4]]
2x2 matrix K whose values ascend just like P's, and is filled with only prime numbers, and the values when summed add up to 185.

Assuming P * K = N, what is the determinant of N? also, i want to see matrix P and K to check to make sure you solved the problem correctly. answers without P or K will be disregarded.

edit2: shoot i forgot! the determinant of K must be -2735...

[Happybobjr]

haha,  tricky.  it is 1.5 hours.  You are going to swim with the current.

[ruler501]

what are perfect numbers again I forgot

[nemo]

numbers whose factors sum up to the original number (excluding the number itself). 28's factors are 1, 2, 4, 7, 14. 1 + 2 + 4 + 7 + 14 = 28. 28 is a perfect number.

[Xeda112358]

Ooh, those look yummy! I knew that 6 was a perfect number because 1+2+3=6, but I didn't know the definition. Thanks!
...

* Xeda112358 goes off to make a black-hole with her calculator

[ruler501]

*ruler builds black hole shelter and cowers from zeda

[Xeda112358]

No prime numbers are perfect numbers, right? Sorry, I just like it when random rules of math pop up, even if they are obvious

* Xeda112358 cannot do math...

Sorry, I can only do math as I think about it, I cannot do it critically.

[AngelFish]

Xeda, have you been through the Ph.D indoctrination process yet, where they remove all of your abilities to do math and replace them with amazing abilities to think about doing math? :p

[Xeda112358]

>.>
<.<

* Xeda112358 always knew there was a secret government program to erase memories...

[ruler501]

I'm seventh grader they haven't gotten to me yet.
Must retain ability make cloak to preserve it...

[Xeda112358]

Hurry! We must protect the youth!

* Xeda112358 is disappointed in herself for getting taken advantage of... She has ninja skills and a calculator!