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G
Use four 5s and certain operations to make expressions equal to integers 1 through 10
greg1313
Aug 6, 2019
Replies
8
Views
900
Aug 11, 2019
Monoxdifly
L
Pick Outside Number
lzkrs
Aug 6, 2019
Replies
0
Views
706
Aug 6, 2019
lzkrs
G
bowling scores, number of wins
greg1313
Jul 15, 2019
Replies
1
Views
868
Jul 22, 2019
greg1313
G
With three 1s make 6
greg1313
Jun 1, 2019
2
Replies
12
Views
1K
Jun 10, 2019
Monoxdifly
G
With three fives make 6
greg1313
Jun 1, 2019
Replies
4
Views
741
Jun 2, 2019
greg1313
X
A liar says he tells truth. So he is a liar. But he just told he tells truth.Solution
x3bnm
Jul 17, 2018
Replies
7
Views
1K
May 15, 2019
zoeyw
S
Sandwich Fillings - 1
Soroban
Apr 28, 2009
Replies
4
Views
2K
Apr 22, 2019
Monoxdifly
D
Weird puzzle
DenisB
Apr 17, 2019
2
Replies
11
Views
601
Apr 19, 2019
Debsta
L
Real life math help needed - how much rent to pay based on your income
Lcytkn
Apr 5, 2019
Replies
1
Views
397
Apr 5, 2019
Debsta
O
a wee puzzle
oldno7
Feb 13, 2019
Replies
5
Views
6K
Feb 13, 2019
Plato
G
Locked
Interior angle sum of quadrilaterals
greg1313
Oct 10, 2018
Replies
8
Views
7K
Oct 13, 2018
topsquark
N
Math Puzzles App
nirkog
Sep 21, 2018
Replies
0
Views
4K
Sep 21, 2018
nirkog
D
Don't you be no square!
DenisB
Jul 29, 2018
Replies
1
Views
4K
Jul 30, 2018
greg1313
G
Leftmost digit of a randomly chosen Fibonacci number
greg1313
Jun 6, 2018
Replies
7
Views
1K
Jul 17, 2018
x3bnm
X
A barber who shaves those who doesn't shave themselves does he shave himself?
x3bnm
Jul 17, 2018
Replies
2
Views
822
Jul 17, 2018
Plato
X
Monty Hall Problem and why isn't it 50/50 with other two unopened doors?
x3bnm
Jul 16, 2018
Replies
6
Views
744
Jul 17, 2018
x3bnm
N
The Five Fives: The Missing Values (+ Small contest!)
NNs
Jun 9, 2018
Replies
3
Views
4K
Jun 29, 2018
duccanhptit
B
balance puzzle
bssteve
Jun 6, 2018
Replies
1
Views
7K
Jun 6, 2018
SlipEternal
G
Arithmetic - - Use four 4's to make 5 with limitations
greg1313
May 30, 2018
Replies
3
Views
4K
Jun 2, 2018
greg1313
X
In how many ways can a Rubik's cube be arranged?
x3bnm
Mar 25, 2018
Replies
0
Views
4K
Mar 25, 2018
x3bnm
N
Number Sequence Game...
nicolyre
Mar 29, 2016
Replies
7
Views
5K
Jan 17, 2018
ChipB
M
numbers in 2 equivalent series
Michael56
Dec 8, 2017
2
Replies
10
Views
7K
Dec 9, 2017
DenisB
G
integration joke type problem
greg1313
Nov 8, 2017
Replies
8
Views
4K
Nov 8, 2017
romsek
R
Lengths of Frame Members
redbullracer
Jan 5, 2012
Replies
4
Views
7K
Oct 30, 2017
skeeter
L
More Patterns worksheets and games suggestions for Grade 1 to 5.
lrmail
Sep 19, 2017
Replies
0
Views
4K
Sep 19, 2017
lrmail
G
Place parentheses in arithmetical expression to make it equal to larger than 39
greg1313
Aug 15, 2017
Replies
1
Views
690
Aug 25, 2017
greg1313
G
Cross-number Puzzle (3x3)
ghauri91
Jul 10, 2017
Replies
4
Views
883
Jul 11, 2017
SlipEternal
G
need help with one more puzzle please
geocacher
Jun 29, 2017
Replies
2
Views
799
Jun 29, 2017
geocacher
G
Need help with a math puzzle
geocacher
Jun 29, 2017
Replies
1
Views
4K
Jun 29, 2017
SlipEternal
K
Finding rules of number pyramids
Khamul
Feb 21, 2017
Replies
3
Views
4K
May 7, 2017
DenisB
Swim Time
topsquark
Oct 28, 2016
Replies
2
Views
904
May 7, 2017
Volta
W
Fish Story
wgdavis
Dec 25, 2015
Replies
2
Views
1K
May 7, 2017
Volta
B
Shortest possible diatnace to link these four towns
Bobmekensi
Jan 15, 2016
Replies
6
Views
2K
Apr 9, 2017
msfallah
T
Guess the number!
Trefoil2727
Apr 1, 2017
Replies
1
Views
935
Apr 2, 2017
HallsofIvy
R
Probability theory, rolling dice
Rafael
Feb 11, 2017
Replies
4
Views
932
Feb 12, 2017
Rafael
D
Prisoner Hat Riddle
DavidB
Jan 11, 2016
Replies
3
Views
1K
Jan 22, 2017
MacstersUndead
A
Knights - knaves puzzle
Alderamin
Dec 7, 2016
Replies
9
Views
1K
Jan 5, 2017
DenisB
D
Another puzzle question
DenisB
Nov 30, 2016
Replies
6
Views
794
Dec 1, 2016
Archie
D
Question on a puzzle
DenisB
Nov 24, 2016
2
Replies
12
Views
1K
Nov 24, 2016
Archie
D
Travelling problem/puzzle
DenisB
Nov 2, 2016
Replies
5
Views
918
Nov 3, 2016
ChipB
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