$\blacktriangleright$    To delete several columns

  1. Select at least one cell in each column you want to delete.

  2. From the Edit menu, choose Delete Columns.

  3. Note that if you select and delete the contents of an entire row or column in a single operation, the row or column is deleted from the table. To delete the contents of a row or column but keep the row or column in the table, delete the contents of at least one cell in a separate operation.