The given function is having three input variables A , B and C the minterms in adjacent squares can always be combined using the adjacency property m0 + m1 : A'B'C'+ A'B'C = A'B' m4 + m6 : AB'C' + ABC' = AC' m1 + m5 : ABC + AB'C = AC m0 + m4 : A'B'C' + AB'C' = B'C' m1 + m5 : A'B'C + AB'C = B'C