986 | Science: Mathematics | True / False | Easy | A universal set, or a set that contains all sets, exists. |
987 | Geography | Multiple Choice | Medium | Which of the following countries banned the use of personal genetic ancestry tests? |
988 | Geography | Multiple Choice | Easy | Which of the following former Yugoslavian states is landlocked? |
989 | Geography | Multiple Choice | Easy | What is the 15th letter of the Greek alphabet? |