The tens digit of a 3 - digit number is 2 more than ones digit. The hundreds digit is double the tens digit. If the sum of all digit is 14. What is the number?

the sum of all 2 digit natural number

the sum of all 2-digit natural number

What is the largest 3-digit number that has all of its digits different and is equal to 37 times the sum of its digit ?

Find the sum of the greatest 3-digit number and the smallest 2-digit number.
Answer: The sum is 

choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13

choose any three digit from 1 to 9 to from a 3 - digit number and each digit is chosen only once how many of these have the sum of all digit equal to 13

If B is not divisible by 24 and B is the greatest 5 - digit number that the sum of the sum of all digits is 21 then B = ?

choose any three digits from 1 to 9 to form a 3 - digit number and each digits is chosen only once. how many of these have the sum of all digit equal to 13