Q: How Many Digits in the Number 420,121,100?

 A: The number 420,121,100 has 9 digits.

How does 420,121,100 have 9 digits?

You simply count the number of digits from the first number to the last. Like this:


420121100
Digit # 123456789

What are the number of digits of the numbers near 420,121,100?

420,121,098420,121,099420,121,101420,121,102
9999

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