What is the next number in this sequence?
1) 11247
2) 7865
3) 97630
4) 41562
Hint: there are only five numbers in this sequence and the fifth number is five digits long
it turns out, if when looked at as
column # 1: 1094_
column # 2: 1771_
column # 3: 2865_
column # 4: 4636_
column # 5: 7502_
Column 5 - Column 4 = Column 3
Column 4 - column 3 = Column 2
Column 3 - Column 2 = Column 1
So, From this information i get a set of 11 solutions (my reasoning being that, if Digit 5 of C1 is x, & C2 is Y, C3 must be x+y, C4 is y+x+y, and c5 is x+y+y+x+y. because Digit 4 of C1 + Digit 4 of C2 = Digit 4 of C3 and not D4 of C3 - 1, X+Y must be less than 10. The same thinking (i believe) shows that X+2Y is less than 10, and 2X+3Y is greater than or equal to 10.)
My 11 solutions are 13471, 14594, 23583, 32572, 33695, 41594, 42684, 51673, 52796, 61785, and 71897
i'm having trouble determining why any 1 of them is the correct one, so i'll leave that to someone else
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Posted by Joe Ruby
on 2004-11-18 02:07:21 |