Answer:
i think that it is oil
Step-by-step explanation:
because it does not change
Answer:
See proof below
Step-by-step explanation:
We have to verify that if we substitute
in the equation
the equality is true.
Let's substitute first in the right hand side:

Now we use the distributive laws. Also, note that
(this also works when the power is n-2).



then the sequence solves the recurrence relation.
I am relatively sure the answer you are looking for is;
H H H T T H T T H H H H