4's only

how many numbers can be created using four 4's in combination with any mathematical symbol beginning with zero

example:

44-44=0
44/44=1
(4x4)/(4+4)=2
(4x4-4)/4=3
remember that you must use four 4's
next up the number 4

4+(4-4)/4 = 4
4 + (4/4)^4 = 5
(4 + 4)/4 + 4 = 6

Originally posted by lemondrop
how many numbers can be created using four 4's in combination with any mathematical symbol beginning with zero

example:

44-44=0
44/44=1
(4x4)/(4+4)=2
(4x4-4)/4=3
remember that you must use four 4's
next up the number 4

44/4 - 4 = 7
4-4+4+4 = 8
4+4+4/4 = 9

4+(4-4)/4=1 not 4
your equation for the number 5 is also incorrect

Originally posted by lemondrop
4+(4-4)/4=1 not 4
your equation for the number 5 is also incorrect

remember to use parenthesis or else your equation for number 9 is incorrect

must use 4 fours

square root, factorials, logarithms etc. may be used

Originally posted by lemondrop
remember to use parenthesis or else your equation for number 9 is incorrect

the number 13 is difficult

my mistake forkedknight
can you do number 13?

sqrt(4^4)*sqrt(4)+sqrt(4)=10
4+4+4-sqrt(4)=10
4*4-4-sqrt(4)=10

4*(4-4/4)=12


4*4-4/4=15
sqrt(4)*sqrt(4)*sqrt(4)*sqrt(4)=16

now 13
can anyone come up with a formula for 13?

to avoid any ambiguities the use of parenthesis may be required