Question

A combination lock uses three numbers between 1 and 57 with​ repetition, and they must be selected in the correct sequence. which of the five counting rules is used to find that​ number? how many different​ "combinations" are​ possible? is the name of​ "combination lock"​ appropriate? if​ not, what other name would be​ better?

Answer 1

a) The "fundamental" counting rule seems appropriate.

b) 57^3 = 185,193 "combinations" are possible

c) Since sequence is important, perhaps "permutation lock" would be appropriate.