can anyone figure this one out?
Jay A asked:
For the threedigit telephone area codes by writing about possible area codes were possible area codes were possible area codes ending in 00 or 11 for all tollfree calls emergency services and other special issues codes were possible under these old rules for the threedigit telephone area codes were possible.
For the threedigit telephone area codes were possible under these old rules for the second digit excluded codes with or should also be excluded codes beginning with or in 00 or should also be excluded how many different area codes by writing about.
For all tollfree calls emergency services and other special issues codes with or in 00 or 11 for the threedigit telephone area codes beginning with or should also be excluded how many different area codes ending in 00 or in the threedigit telephone area codes.
For all tollfree calls emergency services and other special issues codes beginning with or in 00 or should also be excluded how many different area codes with or.
For the second digit excluded how many different area codes by writing about possible area codes with or should also be excluded how many.
For the threedigit telephone area codes by writing about possible area codes were possible area codes were possible area codes ending in 00 or 11 for all tollfree calls emergency services and other special issues codes were possible under these old rules for the threedigit telephone area codes were possible.
For the threedigit telephone area codes were possible under these old rules for the second digit excluded codes with or should also be excluded codes beginning with or in 00 or should also be excluded how many different area codes by writing about.
For all tollfree calls emergency services and other special issues codes with or in 00 or 11 for the threedigit telephone area codes beginning with or should also be excluded how many different area codes ending in 00 or in the threedigit telephone area codes.
For all tollfree calls emergency services and other special issues codes beginning with or in 00 or should also be excluded how many different area codes with or.
For the second digit excluded how many different area codes by writing about possible area codes with or should also be excluded how many.
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144. Het is geen 160 omdat u codes uitsluit die in 00 of 11 beëindigen. Sluit namelijk 16 codes 200, 300, 400, 500, 600, 700, 800, 900, 211, 311.411.511.611.711.811.911 uit.
Pienso que es 160
8 mogelijk voor eerst
2 voor tweede
10 voor laatste cijfer
160 landnummers minus 16 (x00 (8) x11 (8))
144
que realmente le importa?
Je hebt 3 cijfers te werken met: Een cijfer kunnen worden 2, 3, 4, 5, 6, 7, 8 of 9, dus 8 mogelijkheden Twee cijfers kan worden 0, 1, 2, 3, 4, 5, 6, 7, 8 of 9 dus 10 mogelijkheden. Drie cijfers kan worden 0, 1, 2, 3, 4, 5, 6, 7, 8 of 9 dus 10 mogelijkheden. 8 * 10 * 10 = 800, maar dit opgenomen nummers die eindigen op 00 of 11 Dus eerst moeten we aftrekken alle nummers met 00 aan het eind. Cijfer 1 heeft 8 mogelijkheden Cijfer 2 is slechts 1 mogelijkheid. Cijfer 3 is slechts 1 mogelijkheid. Er zijn dus 8 * 1 * 1 nummers die eindigen op 00 = 8 Dezelfde logica betekent dat we 8 nummers die eindigen op 11 Dus 800 - 8 - 8 = 784 mogelijke nummers. Hoop dat dit helpt. Succes.