there are 4 choices for each knob. Since each knob is independent of the others, that gives
4*4*4=64
choices.
24 would be correct if no duplicate digits were allowed.
A locked door is opened by turning the knobs
shown below to a particular combination of
numbers.
How many possible number combinations are
there for opening the locked door?
There is a picture of 3 knobs, each with four numbers being: 1, 2, 3, and 4. Maybe you could also explain a little?
A) 4
B) 12
C) 24***
D) 64
2 answers
Oh ok, thank you so much