答：Sum函數(shù)可以在工作表中求，同樣也可以對(duì)VBA數(shù)組求和，如：

                    
                      Sub t2()
                          arr = Array(1, 35, 4, 13)
                          MsgBox Application.Sum(arr)  '對(duì)數(shù)組進(jìn)行求和
                      End Sub

                2、Count和Counta

                     Count和Counta可以統(tǒng)計(jì)數(shù)組中數(shù)字的個(gè)數(shù)和數(shù)字+文本的個(gè)數(shù)。

                    Sub t3()
                         arr = Array(1, 35, "a", 4, 13, "b")
                         MsgBox Application.Count(arr)  '返回?cái)?shù)字的個(gè)數(shù)4
                         MsgBox Application.CountA(arr)  ‘返回?cái)?shù)組文本和數(shù)字的總個(gè)數(shù)
                    End Sub