eNews Tech Quiz

Congratulations on taking part in the Summer '07 eNews tech quiz.

The question is: How many total keypad PIN combinations are possible in IEI's standard 6-digit PIN code, where "6-digit" refers to the maximum length of the PIN.


The computation for the answer is:

n^1 + n^2 + n^3 + n^4 + ... n^k  where n = the number of possibilities per location, in this case 10, and k = the total number of locations, in this case 6.

Giving us:

10^1 + 10^2 + 10^3 + 10^4 + 10^5 + 10^6
10 (1 digit codes) + 100 (2 digit codes) + 1,000 (3 digit codes) + 10,000 (4 digit codes) + 100,000 (5 digit codes) + 1,000,000 (6 digit codes) = 1,111,110 possible combinations.

If you arrived at the correct answer, you are indeed a tech guru!