title: Find numbers whose sum of digits is 7
body: <p>i have a question that  i want to display the numbers up to 100 where the sum of their digits is 7.</p>
  
  <p>can any one help me
  suppos there is 25 . in ths 2+5=7 then it will be displayed. i have problem to break 25 as 2 and 5  </p>