If $$2^a \times 2^b=2^c$$ and $$0\lt{c}\lt{1}$$, then which of the following could be the average (arithmetic mean) of a and b? Indicate all such averages.
If $$2^a \times 2^b=2^c$$ and $$0\lt{c}\lt{1}$$, then which of the following could be the average (arithmetic mean) of a and b? Indicate all such averages.