How many different answer sheets can be submitted?

Question

For this problem, assume the test had 8 true-false questions and 8 multiple-choice questions, and that each multiple-choice question had 3 choices.

Answer 1

Assuming that every question is answered, there are 2 choices for each true-false question and 3 choices for each multiple choice question, so the number of different answer sheets is 

 

(2⁸) * (3⁸) = 256 * 6561 = 1679616