Private Sub btnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click
        Dim intrandom As New Random
        Dim intGetal As Integer
        Dim intGetal2 As Integer
A:
        intGetal = intrandom.Next(0, 10)
        intGetal2 = intrandom.Next(0, 10)
        Dim intSom As Integer = intGetal + intGetal2
        If InputBox("Hoeveel is " & intGetal & " + " & intGetal2 & " ?") = intSom Then
            MessageBox.Show("Correct!")
            GoTo A
        Else
            MessageBox.Show("Niet correct! Probeer later opnieuw")
            Me.Close()
        End If
    End Sub