Digit is not a real number unless it is 0-9
This depends on what you mean by smallest. The smallest four-digit whole number is 1,000; the smallest four-digit real number is .0001 (1/10,000); the smallest four-digit integer is -9,999.
Divide the two-digit number by the one-digit number. If the remainder is zero then the 2-digit number is a multiple and if not, it is not.
No. When adding the smallest 2 digit number (= 10) to the smallest 2 digit number (again, 10) the result is a 2 digit number (10 + 10 = 20). When adding the largest 2 digit number (= 99) to the largest 2 digit number (again, 99) the result is a 3 digit number (99 + 99 = 198). As you can see, you'll either get a 2 or 3 digit number, but never a 4 digit number.
If your asking in a digit it's called a 4 digit number and it is the smallest 4 digit number
Well, let's see ... If it's between 20 and 30, then its ten digit has to be 2. And if its ten digit is 2, then its one digit has to be 9. So the real question we have to answer is: "Is 29 a prime number ?" The answer is: Yes. So that must be it.
No.
A double digit number, triple digit number........
9999 is the 4-digit number and 999 is the 3-digit number.
This depends on the type of number you want. For integers, the answer is 105. For real numbers, the answer is -.005.
Difference usually implies subtracting one real number from another. What are you asking?
-99 is the smallest two digit number.-99 is the smallest two digit number.-99 is the smallest two digit number.-99 is the smallest two digit number.
A leading digit is the digit/number at the beggining of a decimal number or regular number and is the first number to the left.