-1 OR 5*5=25

It depends on the context (math logic vs. a specific programming language). Here are common interpretations:

• Mathematical/logic (treating nonzero as true and 5*5=25 as true): true OR true = true.

• If you mean a programming language expression like (-1) OR (5*5 == 25):

  • C/C++ (using logical OR): 1 (true)
  • Python: -1 (because -1 is truthy, and or returns the first truthy value)
  • JavaScript: -1 (same reason as Python; || returns the first truthy operand)

• If you meant bitwise OR (-1 | 25): result is -1 (since -1 has all bits set).

If you tell me the exact language or exam context, I can give a precise answer.