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

Home > Numbers
The magic Number (Posted on 2004-03-17) Difficulty: 1 of 5
Whats the smallest number ("the magic number") that can satisfy these conditions?

- its positive

- it is not divisible by any number below 20 (excluding 1)

- the average of the digits is an even number between 3 and 9

  Submitted by Victor Zapana    
Rating: 3.3333 (9 votes)
Solution: (Hide)
53.

At first, many have thought it was 37. However, as people have pointed out, 3 + 7 = 10 /2 = 5, which is not even. I am sorry if the "even" is subject to misinterpretation, and next time (if I do have a next time) I won't just write even, but with an added note liek "even whole..." or "even (as in a number divisible by 2)" or something.
And wow... I agree with Jer. This "easy" question did spark some discussion. One more point: Bravo to Charlie to be first to supply the answer, and to DJ to smooth all discussions out

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionAnswerMath Man2012-04-01 21:04:57
SolutionPuzzle SolutionK Sengupta2008-02-27 04:52:30
Some Thoughtssome thoughts on the puzzleK Sengupta2007-05-12 13:42:40
re: couriosityhal2007-04-20 01:08:44
No Subjectmike2004-05-11 19:07:16
Solutionsrividhya's Solution to Victorsrividhya2004-04-04 23:45:59
solution to Victor Zapanasrividhya2004-04-04 23:41:03
re(2): steve's solutionjohn doe2004-03-31 14:37:19
re: steve's solutionVictor Zapana2004-03-26 23:52:38
Solutionsteve's solutionSteve Royer2004-03-25 02:18:45
Questionre: and the answer isshawn2004-03-23 10:49:55
and the answer isMaghann2004-03-22 20:36:34
Solutionanswerlogischer Verstand2004-03-21 17:49:18
Source of confusionJer2004-03-19 12:28:38
re: um..Joshua Tomajko2004-03-18 20:53:27
um...Joshua Tomajko2004-03-18 20:52:09
re(2): SolutionDJ2004-03-17 20:38:08
re: SolutionWally2004-03-17 17:16:14
re: Pay Attention/ speedy is betterAdy TZIDON2004-03-17 14:39:26
re: mea culpaThalamus2004-03-17 14:39:16
Some Thoughtsmea culpaAdy TZIDON2004-03-17 14:30:58
re: Pay AttentionThoughtProvoker2004-03-17 13:06:42
SolutionPay AttentionDJ2004-03-17 12:52:26
re: couriosityPieater2004-03-17 12:07:02
couriosityPieater2004-03-17 12:04:25
re: Best and finalRohan Shah2004-03-17 11:44:16
re: solution -- noteCharlie2004-03-17 09:02:15
re: SolutionCharlie2004-03-17 08:48:49
SolutionsolutionCharlie2004-03-17 08:47:37
SolutionSolutionFederico Kereki2004-03-17 08:46:07
re: Best and finalJuggler2004-03-17 08:44:27
re: Best and finale.g.2004-03-17 08:42:39
re: Best and finalThalamus2004-03-17 08:41:55
SolutionBest and finalAdy TZIDON2004-03-17 08:38:42
Solution speedy SOLUTIONAdy TZIDON2004-03-17 08:33:57
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 (1)
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