For the Generate and Test problem solving method good generators are complete, non-redundant, and use useful information to restrict the number of possible solutions. In the burglar problem described in Class Note #19 suppose that the burglar knows the following information respectively, please estimate the average time that a wise burglar who may open the safe: a) the second digit is 5, other digits are even b) the first digit is even, the sum of the last three digits is 12