Question

A 6-digit (number 0-9) code may not start with an 8 or 9 and digits can be repeated how many codes are possible

Answer 1

There are 8 possibilities for the first digit (since it cannot be 8 or 9) and 10 possibilities for the remaining 5 digits (0-9). Therefore, the total number of possible codes is:

8 * 10^5 = 8,000,000