Which of the expressions can you use to find the number of 3-digit passwords you can make using the digits 5, 6, and 7, if you d
o not repeat any of the digits?
3 x 2 x 1
3 + 2 + 1
5 x 6 x 7
5 + 6 + 7
1 answer:
Hello,
Codes are :
5_6_7, 5_7_6
6_5_7,6_7_5
7_5_6,7_6_5
Choising the first (3 possibilities)
next choising the second (2 possibilities)
chosing the last (1 possibility)
So 3*2*1=6
Answer A
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