Bebekhshid baraye vorudiye in soal mishe (1/2 | 3/4 & 5/6) ra vared kard? age mishe kodum halat dar nazar gerefte mishavad? ((1/2 | 3/4) & 5/6) ya (1/2 | (3/4 & 5/6))?

Bebekhshid baraye vorudiye in soal mishe (1/2 | 3/4 & 5/6) ra vared kard?

No.

From this:

A configuration can be represented in text format.

• A single appliance is represented by the numerical value of its resistance (without enclosing parentheses).
• A configuration that is the serial connection of several configurations is represented as a list of the representations of its components, separated by the ampersand character ("&") and enclosed in a pair of parentheses.
• configuration that is the parallel connection of several configurations is represented as a list of the representations of its components, separated by the vertical bar character ("|") and enclosed in a pair of parentheses.

It can be inferred | and & are not mixed.