Welcome to Westonci.ca, where your questions are met with accurate answers from a community of experts and enthusiasts. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

The serial number on a bill consists of a letter followed by seven digits and then a letter. How many different serial numbers are possible, given the letters and digits cannot be repeated?