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.
BB彩票（网址:qmh8.com）BB彩票_BB彩票_BB彩票_BB彩票_BB彩票BB彩票_BB彩票_BB彩票_SS28f8W2
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
