A letter lock consists of three rings each marked with EIGHT different letters. The number of distinct unsuccessful attempts to open the lock is at the most?	Pick one.
A) 4002	B) 4090	C) 4095	D) 177	E) 123
Since each ring consists of eight different letters, the total number of attempts possible with the three rings is   = 8 * 8 * 8 = 4096. Of these attempts, one of them is a successful attempt.   Maximum number of unsuccessful attempts = 4096 - 1= 
<gadget id="calculator">4096 - 1</gadget>
<output>4_095</output>
4095   Answer:4095
<result>C</result>
A letter lock consists of three rings each marked with EIGHT different letters. The number of distinct unsuccessful attempts to open the lock is at the most?