There are five students S₁, S₂, S₃, S₄ and S₅ in a class and for them there are five seats R₁, R₂, R₃, R₄ and R₅ arranged in a row, where initially the seat R_i is allotted to the student S_i, I = 1, 2, 3, 4, 5, But, on the examination day, the five students are randomly allotted the five seats.

The probability that, on the examination day, the student S₁ gets the previously allotted seat R₁, and NONE of the remaining students gets the seat previously allotted to him/her is