# Number Patterns

• Nov 25th 2008, 03:28 PM
Linnus
Number Patterns
I can't seem to figure out the pattern in this:
1001, 502, 254, 110, __, __
• Nov 25th 2008, 03:47 PM
skeeter
Quote:

Originally Posted by Linnus
I can't seem to figure out the pattern in this:
1001, 502, 254, 110, __, __

neither could I, this was definitely not one to "guess" at ... I got a cubic regression to fit the data using my calculator.

\$\displaystyle y = -24.5x^3 + 272.5x^2 - 1145x + 1898\$

\$\displaystyle y(1) = 1001\$

\$\displaystyle y(2) = 502\$

\$\displaystyle y(3) = 254\$

\$\displaystyle y(4) = 110\$

\$\displaystyle y(5) = -77\$

\$\displaystyle y(6) = -454\$

whoever came up with this should be slapped.
• Nov 25th 2008, 04:02 PM
Linnus
Quote:

Originally Posted by skeeter
neither could I, this was definitely not one to "guess" at ... I got a cubic regression to fit the data using my calculator.

\$\displaystyle y = -24.5x^3 + 272.5x^2 - 1145x + 1898\$

\$\displaystyle y(1) = 1001\$

\$\displaystyle y(2) = 502\$

\$\displaystyle y(3) = 254\$

\$\displaystyle y(4) = 110\$

\$\displaystyle y(5) = -77\$

\$\displaystyle y(6) = -454\$

whoever came up with this should be slapped.

Yea, I tried that too.

But wouldn't you put 1001, 502, 254 in list 1 and 502, 254, and 110 in list 2 because if y=pattern
then y(1001)=502, y(502)=254, and y(254)=110?
• Nov 25th 2008, 04:40 PM
Linnus
Apparently...the pattern was lacking some numbers...but I still can't figure out the new pattern

1001, 502, 254, 205, 133, 110,__, __