Create a 3-D reference. Click the cell where you want to enter the function. Type = (equal sign), enter the name of the function, and then type an opening parenthesis. Adds numbers. Calculates average (arithmetic mean) of numbers. Calculates average (arithmetic mean) of numbers; includes text and logicals.

Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint. Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint. For more information, see Where to sign in to Microsoft 365.

可以使用 简单的公式对) 一组单元格 (区域中的数字求和，但在处理多个数字时 ，sum 函数 更易于使用。 例如，=sum (a2：a6) 出现键入错误的可能性小于 =a2+a3+a4+a5+a6。 下面是使用两个单元格区域的公式： =sum (a2：a4，c2：c3) 对区域 a2：a4 和 c2：c3 中的数字求和。 可按 enter 获取总计 39787。

Activate Windows using a product key. A product key is a 25-character code, that looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. During installation, you'll be prompted to enter a product key. Or, after installation, to enter the product key, select the Start button, and then select Settings > System > Activation > Update product ...

If the Get Help app is unable to resolve your sound or audio issue, try the possible solutions listed: 1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections.

安装 Windows 11 的其他方法（不推荐）. 使用安装助手进行升级. 我们建议你等到设备可以升级到 Windows 11 后再使用安装助手。. 准备就绪后，可以在 Windows 11 软件下载页 上找到它。. 创建 Windows 11 安装媒体. 在 Windows 11 软件下载页面 上，选择 立即创建工具 ，然后 ...

Note: Some versions of Project don't have an associated Microsoft account, or work or school account, or you need to redeem your product key in a different way.See the following if this is how you got your version of Project Professional 2021, Project Professional 2019, Project Standard 2021, or Project Standard 2019: Microsoft Workplace Discount Program (formerly known as Home Use Program ...

Microsoft Edge で閲覧データをクリアする方法: [設定のとその他] > [設定] > [プライバシー、検索、及びサービス] の順に選択します。. [閲覧データのクリア] > [閲覧データを今すぐクリア] の下で、 [クリアする内容を選択] を選択します。. [時間の範囲] で ...

Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

若要验证是否已启用 WinRE，可以在提升的命令提示符下运行以下命令： reagentc /info. 如果已启用 WinRE，则输出中会显示 Windows RE 状态 ，值为“ 已启用 ”。. 此更新需要恢复分区中有 250 MB 的可用空间才能成功安装。. 如果恢复分区没有足够的可用空间，则此更新 ...