To determine the number of possible combinations for a 14-digit number, we can consider that each digit can range from 0 to 9. Therefore, there are 10 possible choices for each digit.
Since there are 14 digits and each digit can independently be any digit from 0 to 9, we can calculate the total combinations by raising the number of choices (10) to the power of the number of digits (14). This can be expressed mathematically as:
1014 = 100,000,000,000,00
This means there are 100 trillion (or 100,000,000,000,00) possible combinations for a 14-digit number.