The answer is 2-to-the-power-of-n, since for every input, the number of different combinations doubles. From your list I think answer A is meant to indicate 2ⁿ.
Answer: I would say the first one
Explanation: I have never seen an interactive button for use in autoformatting at least on a presentation
Answer:
OMG IM LIKE BLUSHING AS DARK AS A TOMATO RIGHT NOW
It follows the normal convention of BODMAS , which is the order of precedence of operations , so the answer equals to 26
