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astraxan [27]
3 years ago
6

Alan has forgotten his 4-digit PIN code.

Mathematics
1 answer:
mina [271]3 years ago
4 0

Answer:

  • 400 sets

Step-by-step explanation:

  • First digit- 1 option (9)
  • Second digit - 10 options (0 to 9)
  • Third digit - 10 options (9 to 9)
  • Fourth digit - 4 options (6, 7, 8, 9)

<u>Possible number of sets:</u>

  • 1*10*10*4 = 400
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