What is this digit operation?
0 -> 0
1 -> 9
121 -> 9
44 -> 6
15 -> 5
1243 -> 7
Project Euler: Problem 6, Natural numbers, squares and sums.
select the primes of a vector
Symmetry of vector
05 - Vector Equations 1
Matlab Basics II - Intervals
Mirror, mirror on the wall, who is fairest of them all?
Find my secret number
Narcissistic number ?
Rank of magic square (for beginners)
Numbers spiral diagonals (Part 2)
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