Make a function which takes one positive integer n and returns a matrix with the numbers of the form (2^i)*(3^j)*(5^k) which are lower or equal to n (i,j,k integers).
Arrange Vector in descending order
Stuff the Board
We love vectorized solutions. Problem 1 : remove the row average.
Find vampire numbers
Maximum of ND-array
Iterative sum of digits of 2^n number
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