How many 15-digits passwords are possible if : Explain work a) the digits can repeat. b)...

Question

Question

How many 15-digits passwords are possible if : Explain work

a) the digits can repeat.

b) the digits cannot repeat

Answer 1

Answer #1

# 10 we know that total total digits are [0,1,2, 3, 4, 5, 6, 7, 8,9 ] 9 a if the digits are repeated them 15- digits password

Answer 2

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