A matrix has inverse only when its determinant is what?

B. 0 से अलग हो / Not equal to 0

Step 1: Identify the concept: this is condition for inverse of a matrix. Step 2: A square matrix is invertible only when its determinant is non-zero. Step 3: Remember determinant not zero for inverse.

Step 1: concept पहचानें: यह inverse of matrix condition है। Step 2: Square matrix invertible तभी होती है जब determinant non-zero हो। Step 3: Inverse के लिए determinant not zero याद रखें।