One company assigns each customer an account number consisting of seven alphanumeric characters (A to Z, 0 to 9). How many ways can they be arranged if there is no restriction on the selection, arrangement, or repetition of the seven characters?

Question

campbell_st · Answer

so you have a total of 36 characters for each position in the account number

so you have 

position   |    1st  |   2nd |   3rd |   4th|  etc
===========================
choices    |     36  x  36  x   36  x  36   etc

hope you get the idea of how to calculate it... and its a huge number

anonymous · Answer

I got 7.83641641X10^10. Does that sound about right? Thank you very much for your post!