The goal of this game is to find the lowest score for the 10 equations below.
0
?
0?
0?
0 = 7
1?
1?
1?
1 = 7
2?
2?
2?
2 = 7
3?
3?
3?
3 = 7
4?
4?
4?
4 = 7
5?
5?
5?
5 = 7
6?
6?
6?
6 = 7
7?
7?
7?
7 = 7
8?
8?
8?
8 = 7
9?
9?
9?
9 = 7
The accepted mathematical operators are:
+
, −
, ×
, ÷
, x²
, √
, !
,(
and )
Note:
Implicit multiplication isn't allowed (e.g. 2(2))
You are allowed to put one or more of the accepted operators anywhere in the equations, but at least one operator must replace the ?
:s.
This is how you calculate the score:
One point for every +
, −
, ×
, ÷
, x²
, √
, !
,(
and )
, so make the equations as short as possible.
Add together all point for the 10 equations - the lowest score wins!
Test your formula at:
https://www.mathway.com/Algebra
?
must be replaced by one or more operator(s)? Or are you allowing things like (ROT13) bar sbyybjrq ol bar vf ryrira? (2) I guess we’re allowed to put(
at the beginning and)
at the end. (3) Is unary minus allowed? (4) I guess that exponentiation isn’t allowed, although it’s (IMHO) a more fundamental algebraic operator than factorial. Since you have explicitly documented one exclusion (implicit multiplication by concatenation), you should probably mention this. $\endgroup$x²
(opposite to√
) was missing from the accepted operators, that was not my intention. Sorry, but great job solving it without. I also edited the Note to make it clear that '...one or more of the accepted operators could be anywhere in the equations...' $\endgroup$