If the matrix `[(1,3,lamda+2),(2,4,8),(3,5,10)]` is singular then find `lamda`

Assertion (A) : If the matrix A=[{:(1,3,lambda+2),(2,4,8),(3,5,10):}] is singular , then lambda=4 . Reason (R ) : If A is a singular matrix, then |A|=0

The matrix [(lamda,-1,4),(-3,0,1),(-1,1,2)] is invertible if

In the matrix A=[(3-2x,x+1),(2,4)] is singular then X=?

The matrix [[lamda,1,0],[0,2,3],[0,0,lamda]] is invertible.

For what value of k ,the matrix [[2-k,3],[-5,1]] is singular.

If the matrix [5x2-10 1] is singular, find the value of x .