Numbers with prime factors 2, 3 and 5.
Back to basics 15 - classes
Number of digits in an integer
length of a vector
Get all prime factors
surface areas of a cylinder
basic matrix operations: rotate and find sum of diagonal elements of the resultant matrix
Remove white spaces at the end of the input string
find number of times of occurrence of the most frequent number in a row vector
Find NaNs in the matrix
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