skip to main
|
skip to sidebar
Sponge City
Monday, 9 November 2015
DAY 430
Puzzle by Sam Loyd (1841-1911):
Arrange three 9's in any mathematical configuration to total 20.
HINTS:
#1: The solution involves only addition and division.
#2: The solution involves a decimal.
Answer:
9 + 9
.9
Newer Posts
Older Posts
Home
Subscribe to:
Posts (Atom)
Math Geeks
Blog Archive
►
2024
(2)
►
August
(1)
►
July
(1)
►
2023
(2)
►
February
(2)
►
2020
(11)
►
September
(10)
►
May
(1)
►
2019
(7)
►
September
(2)
►
August
(2)
►
May
(1)
►
March
(1)
►
January
(1)
►
2018
(5)
►
September
(3)
►
August
(1)
►
February
(1)
►
2017
(4)
►
November
(1)
►
June
(2)
►
January
(1)
►
2016
(20)
►
November
(1)
►
September
(2)
►
June
(1)
►
April
(4)
►
March
(5)
►
February
(2)
►
January
(5)
▼
2015
(7)
►
December
(1)
▼
November
(1)
DAY 430 Puzzle by Sam Loyd (1841-1911): Arrange ...
►
April
(1)
►
February
(2)
►
January
(2)
►
2014
(5)
►
December
(1)
►
October
(1)
►
August
(1)
►
June
(2)
►
2013
(12)
►
December
(1)
►
November
(3)
►
October
(1)
►
July
(6)
►
March
(1)
►
2012
(28)
►
December
(1)
►
October
(2)
►
September
(1)
►
August
(1)
►
July
(1)
►
June
(4)
►
May
(3)
►
April
(5)
►
March
(3)
►
February
(5)
►
January
(2)
►
2011
(91)
►
December
(3)
►
November
(7)
►
October
(4)
►
September
(8)
►
August
(12)
►
July
(7)
►
June
(18)
►
May
(22)
►
January
(10)
►
2010
(88)
►
December
(3)
►
November
(12)
►
August
(1)
►
July
(3)
►
June
(15)
►
May
(17)
►
April
(16)
►
March
(3)
►
February
(10)
►
January
(8)
►
2009
(89)
►
October
(28)
►
September
(53)
►
August
(8)
