24 three digit numbers if repetition of digits is not allowed. 4P3 = 24.
If repetition of digits is allowed then we have:
For 3 repetitions, 4 three digit numbers.
For 2 repetitions, 36 three digit numbers.
So we have a total of 64 three digit numbers if repetition of digits is allowed.
The biggest 4 digit number that can be made from using the digits of 850236, using a digit at most once, is 8653.
24
A number is made up from digits in the numeral system. We often use the decimal system in which we use 10 digits, In writing the any number, many digits are used, even repitation of digits. when we write any number using the digits, the last digit ( from right side ) in that number is called unit digit. for example in the number 9814868980, here 0 is called unit digit.
987,654,321
874321 is the largest number made from all these digits.
2
625. Here's how:There are five odd digits {1,3,5,7,9} so our numbers will be made using only these digits. This is the same number of possibilities as if you had a base 5 number system where the allowed digits are {0,1,2,3,4}. For a 1 digit base-5, there are 5 possibilities, for a two digit base-5 there are 5² = 25 possibilities, so for a 4-digit, there are 5^4 = 625possible. This is the same number you will have with only using odd digits.
Six: 234, 243, 324, 342, 423, and 432.
In decimal, a digit is one of the ten symbols that represent the numbers 0 to 9. A number can be made up of one or more digits. For example: 1 is a digit (as well as a number of course). 11 is a number made up of 2 digits.
A delectable number has nine digits, using the numbers 1-9 once in each digit. The first digit of a delectable number must be divisible by one. The first and second digits must be divisible by two, the first through third must be divisible by three, etc. There has only been one delectable number discovered: 381654729.
9876
37 is a number made up of the digits 3 and 7