| 3389 | Science: Gadgets | Multiple Choice | Medium | Which company developed the Hololens? |
| 3388 | Science: Gadgets | Multiple Choice | Hard | Who built the first laser? |
| 3387 | Science: Gadgets | Multiple Choice | Easy | When was the iPhone released? |
| 3386 | Science: Gadgets | Multiple Choice | Easy | When did the CD begin to appear on the consumer market? |