Add two numbers
Implement a ROT13 cipher
Back to basics 9 - Indexed References
Create a square matrix of multiples
Area of a triangle
Create matrix of replicated elements
Penny flipping - calculate winning probability (easy)
Calculate the probability that at least two people in a group share the same birthday.
It's race time again! Write a function that is at least twice as fast as the test suite call of repmat().
It's race time! Write a faster function than the test suite call of unique().
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