5 significant figures.
Ther are 6 0s in 1 million.
4 of them.
Ther are 3 of them
ther are five significant digits in that number.
6x6x6x6 or 1296
10,000 of them, from 0000 to 9999. However, most people would not count numbers with leading 0s, so that there would be 9000 4-digit numbers.
The number of significant figures in a number is equal to the number of digits to the left of the decimal point up to the first leading zero. It is then added to the number of total digits to the right of the decimal point. In this case, there are six significant digits.
We'll assume that you only want to talk about whole numbers.The smallest 9-digit number is 100,000,000. The largest one is 999,999,999.They represent (all of the counting numbers up to 999,999,999) minus (the first 99,999,999).That leaves 900,000,000 numbers.
ther's no answer
a lot