| 7613 | Science & Nature | Multiple Choice | Hard | Which of these is a semiconductor amplifying device? |
| 7611 | Science: Computers | Multiple Choice | Hard | Australia, Japan, and Southeast Asia are in which ITU Region? |
| 7462 | Science: Computers | Multiple Choice | Medium | What was Bitcoin's block size limit in 2010? |
| 7461 | Science: Mathematics | Multiple Choice | Medium | At what temperature does temp in °C equal temp in °F? |