Find the sum of all the odd numbers in a matrix.
x = [2 3 5 7 1 4 11]
y = 27
Determine if input is odd
Test if two numbers have the same digits
Colon operator of two vectors
select the primes of a vector
Side of an equilateral triangle
most frequent character
Find the index of n in magic(n)
Alternately upper-lower case
union without repitition
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