Discrete math.

A given positive integer n has binary expansion coefficients ak-1, middot middot middot a_2 a_1 a_0 Express the binary expansions of the following numbers in terms of these coefficients. For example, the binary expansion of 2n is (ak - 1 middot middot middot a_2 a_1 a_0 0)_2. 8n n DIV 4 n MOD 4 Note: For full credit, you must explain your reasoning and include any assumptions you make