joym28265 joym28265
  • 10-04-2021
  • Mathematics
contestada

Alan has forgotten his 4-digit PIN code. He knows the first digit is odd, and the last digit is a 5. How many different sets of 4 digits could it be?

Respuesta :

HaikalMegat
HaikalMegat HaikalMegat
  • 10-04-2021

Answer:

72

Calculate one by one:

9P2

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