select the primes of a vector
Integer or Float?
Remove the first, third and fifth rows of a matrix
Product of Each Column
Sum of elements in a vector (★)
Approximate functions 1 (★★★)
Create a vector of the first n natural numbers (★)
Get the elements of diagonal and antidiagonal for any m-by-n matrix (★★★★)
Mo money, mo math #2! (★★★)
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