$\large 1 \, \square \, 2 \, \square \, 3 \, \square \, 4 \, \square \, 5 \, \square \, 6 \, \square \, 7 \, \square \, 8 \, \square \, 9 \, \square \, 10 = 11$

There are $2^9 = 512$ 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.

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