How many integers less than 1 billion are very round numbers? - Answers

Very round numbers are typically defined as integers that end with one or more zeros. Therefore, in the range of integers less than 1 billion (which is 1,000,000,000), the very round numbers are those that can be expressed as ( n \times 10^k ) where ( n ) is a non-zero integer and ( k ) is a non-negative integer. The very round numbers less than 1 billion include multiples of 10, 100, 1000, up to 1 billion itself, totaling 100 million such integers (from 1 to 999,999,999, including 10, 100, 1000, ..., 999,999,990). Thus, there are 100 million very round numbers below 1 billion.