Answer to Question #139406 in Algebra for Cameron Foster

Question

2. Lara must enter a 5 digit code in order to access the mansion’s safe to retrieve her parent’s will. How many codes must Lara punch if . . .

(a) There are no restrictions?

(b) There are no repeats?

(c) The code ends with an even number?

(d) The first digit is 2?

(e) The code is made up of only non-repeating odd numbers?

Answer 1

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