title: Numeric CAPTCHA validation in windows forms
body: <p>I am creating a program that shows two random numbers on two separate labels then I have to add / subtract them and the answer should be entered in a textbox</p>
  
  <p>How can I add or subtract the numbers and enter the answer on a textbox?</p>
  
  <p>I am creating it in Visual Basic Windows Forms Application</p>