Fundamentals of Mathematics

Refer to the network given above.
If we wanted to prove the following statement using proof by contradiction, what assumption would we start our proof with?
Prove that $$2^n>n$$ for all positive integers $$n$$
Write the negation of the of the following statement and check whether it is true is false.
Australia is a continent
The contrapositive of statement "Something is cold implies that it has low temperature" is