Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
数据：2, 4, 6, 8, 10, 12。计算五数总结。
数据：2, 4, 6, 8, 10, 12。计算五数总结。
Natural Language
Math Input
Extended Keyboard
