The Rank of the matrix, $M = \begin{bmatrix} 0 &1 &1 \\ 1& 0 &1 \\ 1& 1 & 0 \end{bmatrix}$, is ______________.

Rank of the matrix is 3 because there are 3 independent rows.

Alternative reason: The determinant of the matrix is a non-zero value, thus rank of the matrix = number of rows in the matrix

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