-1 OR 5*5=26

I’m not sure what context you have in mind (math logic vs a programming language). Here are the common interpretations:

• Mathematical logic (A or B): “5*5 = 26” is false (since 25 ≠ 26). If you treat -1 as a proposition, that’s not standard. So the meaningful reading is usually just the truth value: True or False. With A being “True/false” unclear, you’d typically just say the disjunction is True if the other part is True.

• Programming language (truthy/falsy semantics, e.g., Python):

  • 5*5 = 26 is false (since 25 != 26).
  • In Python, -1 is truthy (nonzero). The expression -1 or (5*5 == 26) evaluates to -1, because the first operand is truthy and the "or" operator returns the first truthy value.
  • So the value is -1 (not True/False, since Python’s or returns one of the operands, not a boolean).

• In C/C++ with logical OR (||):

  • 5*5 == 26 is false.
  • -1 is nonzero, i.e., true. true || false evaluates to 1 (true).

• Bitwise OR (-1 | 25):

  • This yields -1 in two’s complement systems (since -1 has all bits set).

If you tell me the exact context or language (math notation, Python, C, JavaScript, etc.), I can give a precise evaluation and a short explanation or practice problems.