Problem 18
Задача
Let's introduce the expression M & K, denoting the bitwise conjunction of M and K (logical AND between the corresponding bits of the binary notation). Determine the largest natural number A such that the expression
(X & A ≠ 0) → ((X & 30 = 0) → (X & 20 ≠ 0))
is identically true (that is, takes on the value 1 for any natural value of the variable X)?
Выберите правильный ответ, либо введите его в поле ввода
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