20161018, 00:12  #1  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
19×499 Posts 
Answer in 5 . 4 . 3 . 2 . 1 .....
The following is borrowed from here.
Quote:
Color any additions that you make. Code:
1 = 5  4 + 3  2  1 2 = (5  4 + 3  2) x 1 3 = (5 + 4)  (3 x 2 x 1) 4 = 5 + 4 + (3 x 2)  1 5 = 5 + (4 x 3)  2 x 1 

20161018, 01:13  #2 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
3^{2}×7×73 Posts 
I'll take 6 and pass it on...
6 = (5  4) * (3 * 2 * 1)

20161018, 01:55  #3 
"Mark"
Apr 2003
Between here and the
14207_{8} Posts 
7 = 5  4 + 3 + 2 + 1

20161018, 02:00  #4 
Dec 2012
278_{10} Posts 
8 = 5 + 4  3 + 2 * 1
Last fiddled with by Jayder on 20161018 at 02:01 Reason: Formatting 
20161018, 02:14  #5 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
10010010101101_{2} Posts 
9 = 54 / 3 / 2 * 1
Because 5+4+3+2+1 = 15, each odd number up to 15 is easy: just change one or more pluses into a minus. It is much more interesting to use a minimal number of signs (less than four; then obviously you will have some more than 1digit numbers) Last fiddled with by Batalov on 20161018 at 04:12 
20161018, 02:59  #6 
Jun 2003
1328_{16} Posts 

20161018, 03:44  #7 
"Ben"
Feb 2007
D4B_{16} Posts 
10 = (5 + 4) + (3  (2 * 1))

20161018, 04:19  #8 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
41·229 Posts 
11 = 5 + 4 + 3  2 + 1
12 = 5 + 4 + 3 * (2  1) 13 = 5 + 4 + 3 + 2  1 14 = 5 + 4 + 3 + 2 * 1 15 = 5 + 4 + 3 + 2 + 1 16 = 5 + 4 + 3 * 2 + 1 
20161018, 04:22  #9 
"Curtis"
Feb 2005
Riverside, CA
1001001111100_{2} Posts 
17 = (5 + 4*3) * (21)
18 = 5 + 4*3 + 2  1 
20161018, 04:36  #10 
Apr 2010
Over the rainbow
43×59 Posts 
19=(5*4)(3/(2+1))
20=(5*4)+(3(2+1)) or 20=(5*4*3)/(2+1) 21=(5*4)+(3/(2+1)) Last fiddled with by firejuggler on 20161018 at 05:35 
20161018, 05:03  #11 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
3^{2}·7·73 Posts 
22 = (5 * 4) + 3  2 + 1

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