Blank Space Part 7
Logic
Level
2
\[ \large 1 \, \square \, 2 \, \square \, 3 \, \square \, 4 \, \square \, 5 \, \square \, 6 \, \square \, 7 \, \square \, 8 = 9 \]
There are \( 2^7 =128 \) ways in which we can fill the squares with \( +, -\).
How many ways would make the equation true?
Note: You are not allowed to use parenthesis.
by
Chung Kevin