LETTER LISTS
Credit: GAMES Magazine
Dec/Jan 1990
Richard Marsh

Each list of letters below is a complete set, either used in a certain field or sharing some property. The letters in each list have been alphabetized. Can you determine the significance of each set?

1. A B O
2. C D I L M V X
3. A B C D E F G
4. A B C D F
5. A J K Q

Answers:  

1. Human blood groups
2. Letters used in Roman numerals
3. Musical notes
4. Traditional report card grades
5. Letters found on playing cards