Question 390312
Only two scenarios are possible: either (i) 1 3-choice question and 3 4-choice questions, OR (ii) 2 3-choice questions and 2 4-choice questions.

Then the total number of ways is {{{(2C1*3)*(3C3*4^3) + (2C2*3^2)*(3C2*4^2) = 384 + 432 = 816}}}.