Classify the following functions as injection, surjection or bijection:f : N → N given by f(x) = x2

Classify the following functions as injection, surjection or bijection:f : N → N given by f(x) = $x^{2}$

Mixed-up sentence exercise

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.