-1' OR 3*2<5 or 'URYDiyTw'='

That string looks like an SQL injection attempt rather than a well-formed boolean expression. As written, it’s not valid in SQL (the stray single quote makes it syntactically broken).

What we can say about the readable parts:

• 3*2 < 5 evaluates to false (6 < 5 is false).
• 'URYDiyTw' = '' evaluates to false (a non-empty string is not equal to the empty string).

If you ignore the broken first part (-1' ) and just look at the two clean subexpressions, the OR of false and false would be false. But with the -1' part, the whole expression is not syntactically valid, so no meaningful truth value can be assigned.

If your exam is about SQL injection:

• This resembles an injection payload where an attacker tries to close a string literal and inject OR conditions.
• Defensive measures: use parameterized queries (prepared statements), proper input validation/escaping, least-privilege database accounts, and input handling.

If you want, tell me the exact language or the exam context, and I can tailor a clean, well-formed example and its evaluation.