For what x can we solve $1,2,3,x=5$
$begingroup$
This is a variation on the formation of numbers theme.
Given $1, 2, 3, x$ in order, and the operations plus, minus, times, divide, and brackets, what single digits can x NOT be?
i.e. find a solution for $x$ from $0$ to $9$, or prove there is no solution.
For example if $x=4$ we have:
$ (1+2)times3-4=5$
mathematics formation-of-numbers
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
$endgroup$
add a comment |
$begingroup$
This is a variation on the formation of numbers theme.
Given $1, 2, 3, x$ in order, and the operations plus, minus, times, divide, and brackets, what single digits can x NOT be?
i.e. find a solution for $x$ from $0$ to $9$, or prove there is no solution.
For example if $x=4$ we have:
$ (1+2)times3-4=5$
mathematics formation-of-numbers
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
$endgroup$
add a comment |
$begingroup$
This is a variation on the formation of numbers theme.
Given $1, 2, 3, x$ in order, and the operations plus, minus, times, divide, and brackets, what single digits can x NOT be?
i.e. find a solution for $x$ from $0$ to $9$, or prove there is no solution.
For example if $x=4$ we have:
$ (1+2)times3-4=5$
mathematics formation-of-numbers
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
$endgroup$
This is a variation on the formation of numbers theme.
Given $1, 2, 3, x$ in order, and the operations plus, minus, times, divide, and brackets, what single digits can x NOT be?
i.e. find a solution for $x$ from $0$ to $9$, or prove there is no solution.
For example if $x=4$ we have:
$ (1+2)times3-4=5$
mathematics formation-of-numbers
mathematics formation-of-numbers
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
asked 25 mins ago
JonMark PerryJonMark Perry
19.9k64096
19.9k64096
add a comment |
add a comment |
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