A serial number for a computer consists of 4 letters, followed by 5 digits. The letters O,
Fantastic news! We've Found the answer you've been seeking!
Question:
A serial number for a computer consists of 4 letters, followed by 5 digits. The letters O, I and Q are not used. How many serial numbers are there if: A. Letters can be repeated but digits cannot be repeated? B. Digits can be repeated but letters cannot be repeated? C. Both letters and digits can be repeated? D. Neither letters nor digits can be repeated?
Related Book For
Finite Mathematics and Its Applications
ISBN: 978-0134768632
12th edition
Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair
Posted Date: