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

Home > Numbers > Sequences
Another Simple Sequence (Posted on 2004-12-22) Difficulty: 1 of 5

A master puzzler once showed his apprentice the following 3 numbers:

1 5 9

and asked him "Do you know what the next one is?"

The apprentice replied, "With only three numbers it would be very difficult to figure out the sequence but it appears to be an arithmetic series with each next number being 4 more than the previous."

The master puzzler smiled knowingly and said "Some say the fourth number of the sequence is 3 times the second number, others claim it is the sum of the first three. Do you know the fifth, which is also the last number?"

The apprentice wrote four numbers on a piece of paper and was totally baffled as to what the last number could be. "Why would you think I should know this?" he asked.

The master answered "Because you like to read."

See The Solution Submitted by Erik O.    
Rating: 3.6000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
But some say... | Comment 3 of 10 |
there's a 6th number: 25.
  Posted by Charlie on 2004-12-22 15:43:46
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 (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information