-1" OR 5*5=25 or "dDBEaYYT"="

It looks like a fragment that resembles an attempt at an SQL-injection style tautology, but as written it isn’t a well-formed expression.

What we can say at a high level:

• 5*5=25 is a true statement (a tautology in boolean terms).
• If this is part of a boolean OR chain (A OR B OR C), then as long as at least one operand is true, the whole expression is true.
• The parts -1" and "dDBEaYYT"=" are not valid syntax in most languages as shown (unmatched quotes), so the exact value of the whole expression cannot be determined without fixing the syntax and specifying the language.

If you’re studying for an exam, here are safe, exam-relevant takeaways:

• In boolean logic: A OR B is true if A is true or B is true (or both).
• In many programming and SQL contexts, nonzero numbers and non-empty strings are treated as “truthy” (though exact rules depend on the language).
• In SQL, a common vulnerability is injecting tautologies like OR 1=1 into a query. Defense: use parameterized queries/prepared statements and strict input handling; never concatenate user input into SQL strings.

If you want, tell me the language or provide the exact full expression you’re studying, and I’ll evaluate it step by step for that context.