Because they are place holders
If leading 0s are disallowed, only 27 of them. If leading 0s are allowed then 378.
Including the leading zero, the smallest number you can make from the digits 03418 is 01348. Without the leading zero in the ten thousands column, the smallest number you can form from the digits 03418 is 10348.
The answer will depend on how many digits you have at your disposal. Working with the 10 digits, and barring leading zeros, there are 8,877,690 numbers.
0.0195. Note that leading zeros are non-significant.
A US Billion* has 9 digits following the leading digits (64 being the leading digits in this case.)So 64.1 billion dollars = $64,100,000,000Notice that if you count the number of digits after 64 there are 9Note*: A billion in some other countries is actually a million million (or having 12 digits after the leading digits.) For finance this magnitude of number does not make sense (it's much too large,) and instead the US Billion is used.
It is a count of all digits, excluding leading zeros before the decimal point.
The significant digits are: 3701; so there are four such digits in the measurement. These are the digits that convey the degree of precision included. Leading zeroes and trailing zeroes do not add such meaning.
One. The leading zeroes are not significant.
If the number with the digits reversed can have a leading 0 so that it is a 1-digit number, then 16. Otherwise 13.
Because they are place holders
If leading 0s are disallowed, only 27 of them. If leading 0s are allowed then 378.
Including the leading zero, the smallest number you can make from the digits 03418 is 01348. Without the leading zero in the ten thousands column, the smallest number you can form from the digits 03418 is 10348.
The answer will depend on how many digits you have at your disposal. Working with the 10 digits, and barring leading zeros, there are 8,877,690 numbers.
The answer is 10P3 = 10!/(10-3)! = 10*9*8 = 720
The first 3 significant digits of a number are the first 3 digits starting from the left ignoring any leading zeros. So 31456 = 31500 (3 significant digits) The 5 in the "56" rounds the 4 up.
Leading zeros are not significant digits, therefore 007 has one.