Find the sum, given the first term t1, the common ratio r, and number of terms n.
If input t1=1, r=1, n=7 then output y=7
If input t1=10, r=10, n=5 then output y=111110.
Prime factor digits
random picture with random colours
Project Euler: Problem 7, Nth prime
2 b | ~ 2 b
Convert a numerical matrix into a cell array of strings
Sorted highest to lowest?
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