A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most__________? | MCQ Hive

Mathematics Mcqs

Q A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most__________?

A A. 216
B B. 243
C C. 215
D D. 729

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