Below are the questions I got wrong/had trouble on:

Question 6: The option I chose is incorrect because it says Program 1 does not take the arrow to the gray box. The correct option says both programs are correct.

20206

Question 15: Although the steps in the loop are switched, the starting number is also changed, so the programs display the same values in the same order.

202015

Question 17: Machine language instruction, and all digital data can be represented by bits.

202017

Question 50: The time complexities for the three choices are 10, 2n, and n^2, so all procedures will run in reasonable time.

202050