See also: Four Fours, Five Fives
Write each integer as a combination of 6 6's. Any mathematical symbol is allowed except for digits that are not 6.
Six Sixes/Table of 6s
1 = 6 + 6 + 6 6 + 6 + 6 {\displaystyle 1={\dfrac {6+6+6}{6+6+6}}}
2 = 6 6 + 6 + 6 6 + 6 {\displaystyle 2={\dfrac {6}{6}}+{\dfrac {6+6}{6+6}}}
3 = 6 6 + 6 6 + 6 6 {\displaystyle 3={\dfrac {6}{6}}+{\dfrac {6}{6}}+{\dfrac {6}{6}}}
4 = 6 + 6 6 + 6 + 6 6 {\displaystyle 4={\dfrac {6+6}{6}}+{\dfrac {6+6}{6}}}
5 = 6 − 6 + 6 6 + 6 + sin ( 6 π ) {\displaystyle 5=6-{\dfrac {6+6}{6+6}}+\sin {\left(6\pi \right)}}
6 = 6 + 6 + 6 6 + 6 − cos ( 6 π ) {\displaystyle 6=6+{\dfrac {6+6}{6+6}}-\cos {\left(6\pi \right)}}
7 = 6 + 6 + 6 6 + 6 + sin ( 6 π ) {\displaystyle 7=6+{\dfrac {6+6}{6+6}}+\sin {\left(6\pi \right)}}
8 = ( 6 + 6 6 + 6 − 6 ) 6 {\displaystyle 8=\left({\sqrt {{\dfrac {6+6}{6}}+6-6}}\right)^{6}}
9 = 6 ( 6 + 6 + 6 6 + 6 ) {\displaystyle 9=6\left({\dfrac {6+6+6}{6+6}}\right)}
