This article discusses the failure probability of the 2-within-consecutive (2, 2) out of (n,m) system with the form system of matrix and n is the number of the rows and m (m = 2; 3; 4) is the number of the columns. The approach used in this research is to evaluate the failure probability in every 2 × 2 matrix in the system by using a direct combinatorial method and the number of combinations o…