Topic: Riddle Me This! - Series (Read 745 times)

katsumoto · « **Reply #60 on:** February 04, 2004, 01:50:00 PM »

Cleary, that's right. Can you explain how you got your answer?

cleary · « **Reply #61 on:** February 04, 2004, 02:35:00 PM »

)

- the royal barber was givin one box with "s" coins
- the 6 brothers, S³ - "s" coins remain

with all this done you get this problem: S(S - 1)(S + 1).
- the last part is divisible by 6, if a number is divisible by 6, it is also divided by 3 and even. ( which this problem is )

- so we got "s" whatever it is. the problem is: S(S - 1)(S + 1), and this always has 3 successive numbers. in this problem one of them is always divisible by 3, and another one is always even.

- so this is S=1 ( which doesn't give the boys jack shit

)

thats how i did it. i was gonna scan the sheet of paper i did it on, but my scanner is broken.

Yoko They Cryed · « **Reply #62 on:** February 04, 2004, 02:42:00 PM »

hipstergk27 · « **Reply #63 on:** February 05, 2004, 04:35:00 AM »

katsumoto · « **Reply #64 on:** February 05, 2004, 06:39:00 AM »

G-Prime975 · « **Reply #65 on:** February 05, 2004, 12:45:00 PM »

[EDIT] Hehe, I misspelled a few elements.

[/EDIT]

katsumoto · « **Reply #66 on:** February 05, 2004, 02:03:00 PM »

DuDeR MaN · « **Reply #67 on:** February 05, 2004, 05:28:00 PM »

why do I feel like I'm back in my old highschool algebra class?

SKoT · « **Reply #68 on:** February 06, 2004, 06:53:00 AM »

This is exactly my FST class ( Funstions Statistics Trigonometry)

Ok,

n! Which is the same as n C k
k!(n-k)!

Where n is the row number and k is the position in that row, counting from top to bottom and from left to right. Also, we start counting from zero, so the 6 above would be in the row 4 and column 2.

The rows of Pascal's triangle also represent coefficients of a binomial raised to a power. Consider:

(a+b )4
If we expand this, we get:

a4+4a3b+6a2b2+4ab3+b4
The coefficients are the 4th row of Pascal's triangle:

1 4 6 4 1

SKoT · « **Reply #69 on:** February 06, 2004, 06:56:00 AM »

O wait i did not really answer your question

katsumoto · « **Reply #70 on:** February 10, 2004, 12:38:00 PM »

Yeah, kinda like:

Multiply the number by 8 then add 1. If the result is a perfect square, then the original number is a triangle number.

For example: 10*8+1 = 81. 81 = 9^2. So 10 is a triangle number.
11*8+1 = 89. 89 is not a perfect square, so 11 is not a triangle number.

Okay, I don't think that was really a riddle. But here's one:

EPISODE XIV

The king dies and two men, the true heir and an impostor, both claim to be his long-lost son. Both fit the description of the rightful heir: about the right age, height, coloring and general appearance.

Finally, one of the elders proposes a test to identify the true heir. One man agrees to the test while the other flatly re-fuses. The one who agreed is immediately sent on his way, and the one who re-fused is correctly identified as the rightful heir.

Can you figure out why? Good Luck!!!

DuDeR MaN · « **Reply #71 on:** February 10, 2004, 01:44:00 PM »

uh... I give up. I've been thinking about it for too long and haven't gotten a good answer yet.

cleary · « **Reply #72 on:** February 10, 2004, 04:44:00 PM »

Ripasser · « **Reply #73 on:** February 10, 2004, 09:26:00 PM »

Damn those are hard... only got one right i think... any more?

katsumoto · « **Reply #74 on:** February 11, 2004, 07:14:00 AM »

Author Topic: Riddle Me This! - Series (Read 745 times)