SOLUTION: How many possible 5-digit zip codes are there if the numbers cannot be repeated and the zip code is divisible by two?
Algebra.Com
Question 424171: How many possible 5-digit zip codes are there if the numbers cannot be repeated and the zip code is divisible by two?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The zip code can end in 0,2,4, or 8
If it ends in 0, Then 0 is not allowed
in the 1st 4 digits, so
are the possible codes
---------
If it ends in 2, then
are possible codes
---------
If it ends in 4, then
possible
---------
If it ends in 8, then
possible
---------
Summing these:
(I can't find calculator)
RELATED QUESTIONS
In 1963 the US Postal Service began using five-digit zip codes, how many zip codes are... (answered by Edwin McCravy)
How many five-digit zip codes are possible if digits can be repeated? If there cannot be... (answered by stanbon)
How many different 5-digit zip codes are there if no digit is repeated? (answered by Alan3354)
zip code sequence of five digits were introduced by the united states post office... (answered by Edwin McCravy)
How many 5-digit ZIP codes are possible if the first number cannot be 0 and the last... (answered by Fombitz)
How many different 5-digit zip codes are possible if no digits are... (answered by Alan3354)
In the USA, ZIP codes are used as an alternative to the postcode system
used in the UK.... (answered by math_tutor2020,ikleyn)
For a five-digit zip code, the first four digits can be any of the digits 0-9 and the... (answered by ewatrrr)
Coloso University uses a 5-digit restriction to distribute mails and packages. How many... (answered by ikleyn)