Subject: Cart item count 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Collecting vintage items 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Bonus items 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Expensive items 21 general knowledge quiz questions. It should take around 5 minutes to complete all the questions.

Subject: Selling unwanted items 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: 50% off select items 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Extra 20% off sale items 13 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Nonrecurring item 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Discontinued items 23 general knowledge quiz questions. It should take around 5 minutes to complete all the questions.

Subject: Out-of-season items 12 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Non-cash item 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Promotional items 11 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Pending items 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Untouched items 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Bayesian item response theory (IRT) 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Non-operating items 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.