All odd numbers in x are added, while all even numers are subtracted from this.
x = [1 2 3 4 5];
y = +(1+3+5)-(2+4) = 3
Inner product of two vectors
Project Euler: Problem 6, Natural numbers, squares and sums.
Matrix indexing with two vectors of indices
05 - Vector Equations 3
How many complete pizzas
How many complete pizzas (number 2)
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