Add only the even numbers of x
x = [1 2 3 4 5]
the positive numbers are: 2 4, so their sum is 6
Project Euler: Problem 6, Natural numbers, squares and sums.
Make one big string out of two smaller strings
UICBioE240 problem 1.17
Calculate area of sector
Delete x value in given vector y.
Second smallest number
Check capital letters
All odd - all even
Count the numbers
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