👉 In mathematics, an irrecoverable event or process is one that cannot be undone and therefore cannot be prevented. It refers to events where the outcome cannot be predicted with certainty due to lack of information. For example: - If you start a project but don't finish it on time, this event is irreversible. - If you buy a ticket for a concert, you can no longer attend without being denied admission or having your ticket invalidated. This event is also irreversible. In other words, an irre