Test for randomness could be tightened (cf. Solution 1490988).
Getting the indices from a matrice
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Test if two numbers have the same digits
Fibonacci-Sum of Squares
Count decimal digits of a number
02 - Vector Variables 3
06 - Matrix Equations 2
07 - Common functions and indexing 5
07 - Common functions and indexing 4
07 - Common functions and indexing 3
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