none.
Expressed in digits, this is equal to 14,500,000.
Two (or four) digits added together cannot equal 42. Two-digit numbers multiplied together cannot equal 82.
3721
21.
none.
Expressed in digits, this is equal to 14,500,000.
Well, sweetheart, Armstrong numbers, also known as narcissistic numbers, are numbers that are equal to the sum of their own digits raised to the power of the number of digits. In this case, the Armstrong numbers between 100 and 1000 are 153, 370, and 371. So, there you have it, darlin'. Hope that satisfies your curiosity.
Two (or four) digits added together cannot equal 42. Two-digit numbers multiplied together cannot equal 82.
07, 70, 16, 61, 25, 52, 34, 43: 8 numbers
3721
21.
There are 17 such numbers.
50
21
There are 15 of them.
There are no 3-digit whole numbers whose digits sum to 3. The smallest 3-digit number is 100, and the largest is 999, but in neither case is the sum of the digits equal to 3.