Final answer:
To determine if a matrix is invertible, calculate its determinant. If the determinant is not zero, the matrix is invertible.
Step-by-step explanation:
In order to determine which matrices are invertible, we need to check if they have an inverse. A matrix is invertible if its determinant is not equal to zero. So, for each given matrix, calculate its determinant. If the determinant is not equal to zero, then the matrix is invertible.
For example, let's say we have a matrix A. To calculate its determinant, we can use various methods such as cofactor expansion or row operations. If the determinant of matrix A is not zero, then matrix A is invertible.
Repeat this process for all the matrices in exercises 1-10 to determine which ones are invertible.