All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers > Sequences
the 'I cannot tell 5 lies' sequence (Posted on 2004-11-17) Difficulty: 2 of 5

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

See The Solution Submitted by GOM    
Rating: 3.5000 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Subtraction of columns | Comment 6 of 8 |

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


  Posted by Joe Ruby on 2004-11-18 02:07:21
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (8)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information