Question

In 1963, the United States Postal Service started using ZIP (Zone Improvement Plan) codes. Each ZIP code is a sequence of five digits. How many different U.S. ZIP codes are possible

Answer 1

assuming you can repeat digits and there is no other restriction (which is false) then all numbers from \(00000\) to \(99999\) i.e. \(1,000,000\)

Answer 2

Thanks :)

Answer 3

yw
i hope it is right

Answer 4

for some reason i think it ought to be \(10^5\) but it seems as if it is \(10^6\) and i am a bit confused myself

Answer 5

Here is all the options
100,000
10,000
125
1,250

Answer 6

then go with \(100,000\)

Answer 7

kk thanks

Answer 8

yw

Answer 9

What about this one kind of the same kind of question
In the early 1970's, Canada Post started using six-character postal codes. Each postal code uses three letters and three digits in an alternating pattern. How many different Canadian postal codes are possible?