The door code to gain access to a top-secret laboratory is 6 digits. The first 3 digits of the code are all odd, and the last 3 digits are all even. Digits can be used more than once. How many possible codes are there?

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14 September, 04:30

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Stich · Answer 1

5 odd numbers and 5 even numbers

since they can be repeated

5*5*5=first 3 digits

5*5*5=last 3 digits

in all

5*5*5*5*5*5=15625 ways