private void probabilityToolStripMenuItem_Click(object sender, EventArgs e)
 {
     ProbabilityCalculatorWindow probabilityCalculatorWnd = new ProbabilityCalculatorWindow();
     probabilityCalculatorWnd.Show();
 }
        private void probabilityToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ProbabilityCalculatorWindow probabilityCalculatorWnd = new ProbabilityCalculatorWindow();

            probabilityCalculatorWnd.Show();
        }