4.2.2 Greatest hits from previous weeks

4.2.2.1 How to create a fascinating QR code like this?

http://mathematica.stackexchange.com/questions/120041/how-to-create-a-fascinating-qr-code-like-this

 
Check the facinating QRCode in my profile page here 
 
You can find that this QRCode is some sort of intriguing as the QRCode is a IMAGE ITSELF!!! 
 
So my question is, how to create such a QRCode  ...
 

- asked by Wjx (24 votes), answered by Wjx (19 votes)

4.2.2.2 Find the 5566th digit after the decimal point of 7/101

http://mathematica.stackexchange.com/questions/125025/find-the-5566th-digit-after-the-decimal-point-of-7-101

 
I want to find the 5566th digit after the decimal point of 7/101. I input the following code into Mathematica 11: 
 
Mod[IntegerPart[7/101*10^5566], 10] 
 
 
The output is 6, which is the correct answer.  ...
 

- asked by Wei-Cheng Liu (17 votes), answered by yarchik (19 votes)