-1' OR 3*2>5 --

It looks like a SQL injection payload: -1' OR 3*2>5 --.

• Evaluation in boolean terms: 3*2>5 is true (6 > 5). In an OR expression, true OR anything is true, so the whole condition would evaluate to true if parsed as a boolean.
• In SQL terms: the trailing -- starts a comment, so the rest of the query is ignored. If the input is used in a WHERE clause unsafely, this could cause the condition to always be true and bypass checks.

Important safety note: never test or use injection payloads on real systems. In exams, focus on the concept:

• Why it works (the OR with a true condition makes the whole clause true)
• How to defend against it (use parameterized queries/prepared statements, input validation, least-privilege DB accounts)

If you want, I can show a secure example of how to handle user input in your preferred language.