Postal Letter

How many postal codes do NOT have one letter repeated three times * read information under?

Information : Postal codes in Canada have six characters with alternating letters and digits in the form L#L#L# >>> Grade 12 data

Public Comments

1. Figure out how many total postal codes there are. Figure out how many postal codes have a letter repeating 3 times. Subtract the number of codes with 3 repeating letters from the total number of codes to get your answer.