高一電腦編寫程式Visual Basic 運算子 And問題

pkg31234

我想問下點解
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text = 42 And 13
    End Sub
偵錯果陣我Click咗個Button1之後TextBox1.Text = 8
姐係其實我想問嘅係點解42 And 13會係等於8