I need help please I will give a bunch of points I need the answer or explanation please
1 answer:
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Answer: A.
Step-by-step explanation:
Total digits on keypad = 5
According to permutation,
If repetition of digits is not allowed then the number of 5-digits passwords can be formed = 5!
= 5 x 4 x 3 x 2 x 1 [n!=n x (n-1) x (n-2)x ... x 1]
=120
The probability that someone guesses the correct code =
Hence, the correct option is A.
Notice that
which means the series is divergent. So if this is one of those "select all that apply" questions, then both (c) and (j) are the only choices that do.