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Messages - nemo
Pages: 1 ... 8 9 [10] 11 12 ... 82
136
« on: January 12, 2011, 11:03:07 pm »
yeah, the penguin wins. [97][19] [5] [2] 
137
« on: January 12, 2011, 10:58:28 pm »
penguin, that doesn't work because the determinant is negative 12 and 5+7 is positive 12.
138
« on: January 12, 2011, 10:54:24 pm »
[2 1]
[1 3]
? Not sure if 1 counts as prime...
oh, sorry. no 1 does not count. edit: and i found a matrix. a lot of them, actually... edit2: and any of them will be accepted. edit3: yeah i found 242 matrices that work within the first 100 primes... so it's definitely doable.
139
« on: January 12, 2011, 10:49:55 pm »
ok. find the 2x2 matrix whose determinant equals the sum of the upper left hand corner and the bottom right hand corner. the matrix must be filled with prime numbers only.
to be clear:
[2 7]
[3 5]
the determinant is 2 * 5 - 3 * 7, or -11. the upper left hand corner is 2, and the lower right hand is 5. so if this was the winning matrix, 2 + 5 would have to equal 2 * 5 - 3 * 7.
2 * 5 - 3 * 7 is the determinant of that matrix. questions? ambiguities?
just to warn you, i have no idea if such a matrix exists or not. it's just a question i made up.
140
« on: January 12, 2011, 10:44:34 pm »
you guys want a really hard one? i came up with one but i don't even know where to begin to solve it.
141
« on: January 12, 2011, 10:29:49 pm »
Yeah, 63 is it. I probably should've thought a bit more before picking a question with, once you see it, such an obvious answer. 
yeah, but it seemed tricky. it was a cool problem. i'll think about what my question will be...
142
« on: January 12, 2011, 10:21:30 pm »
64?
edit: sorry i just made a program to figure it out and realized this makes no sense. disregard.
nevermind, it was a bug in the program. 63!
143
« on: January 12, 2011, 10:06:38 pm »
ohh. like the number system pi squared... that would've been helpful to know.
i'm curious as to what runer will come up with
144
« on: January 12, 2011, 09:54:58 pm »
I think I have it but I can't post an answer to this question
is it different from 0 1 or 7? i'm fairly confident 0 is the answer, graph misused my expression and i'm unsure what sir did.
145
« on: January 12, 2011, 09:47:03 pm »
actually it would have to be
int(ln(10)/ln(pi*pi)*100) % 10
% = mod for those who don't know.
anyway, i suppose i'll answer. 0.
146
« on: January 12, 2011, 09:44:06 pm »
Why are you converting it to an integer?
he wants the second digit after the decimal place, and a digit cannot have a fractional part. i multiply by 100 to get the second digit. i'm too lazy to calculate it out
147
« on: January 12, 2011, 09:41:30 pm »
int(ln(10)/ln(pi*pi)*100)
148
« on: January 12, 2011, 09:15:12 pm »
You can have a base of pi squared? Don't bases have to be integers?
if log bases had to be integers, so would exponent bases.
149
« on: January 12, 2011, 06:47:40 pm »
or if you know the angle the tank is shooting at, use sin(angle) as your y increment and cos(angle) as your x increment.
150
« on: January 11, 2011, 10:46:30 pm »
do you have an idea for the first dimension? i'm thinking you have a line with circles and squares on either side and you have to get the circles to one side and squares to the other.
C-C-C-0-S-S-S
the 0 is a blank space. you can move either a square or a circle at a time. circles can only move right, squares left. circles may jump squares and vice versa, but not two in a row.
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