How to choose a random coordinate (location like i,j) in a matrix

Ex: A[1 2 3; 4 5 6];

I want to select a random i,j of an element of this matrix

thank you in advance

Answer 1

[Fangjun Jiang]

[m,n]=size(A);
i=randi([1 m]);
j=randi([1 n])

[abdulrahim alhaj amin]

thank you