Question

Which is the largest natural number?

• A. 9999999
• B. 100000000
• C. 0
• D. The largest number is undefined.

Answer 1

The correct option is D

The largest number is undefined.

Whatever natural number you think could be the greatest, there will always be a natural number, which is 1 greater than that number.
For example, you think 100000000 could be the greatest natural number, and it turns out that 100000001 is a natural number that is greater than 100000000.
Hence, the greatest natural number is not known, or simply undefined.