1. Three rooms contain, 1) Gold coins, 2) Currency notes and 3) Cotton bags. If all three rooms catch fire, which room will the ambulance pour water on first?
2. Ralph goes to the hardware store to buy something for his house. He asks the clerk how much one will cost and the clerk looks it up and tells him it will be $3. He asks about buying twelve and is told it will be $6. Two hundred will cost $9. What is Ralph buying?
3. If Leah is Louis’s sister,
if Clarisse is Bruno’s sister,
if Maud is Christopher’s sister,
then who is Hamilton’s sister —
Irene, Claire, Sue, or Peggy? Why?
4. A boat full of people goes under a bridge and when it comes out the other side not a single person is on it. How can this be?
5. Timothy notes that his five best friends do not know one another. To get things started he invites three of them to lunch: Adams, Brown, and Carter. (The two other friends are Dickinson and Emerson.) The five first names are, in no particular order, Alex, Bob, Chip, Dave, and Elmer.
After the lunch Timothy lists the results:
Bob still does not know Brown.
Chip knows Adams.
Dave knows only one of the others.
Elmer knows three of the others.
Alex knows two of the others.
Dickinson knows only one of the others.
Emerson knows three of the others.
What is the full name of each of the five?
6. A man without eyes saw plums on a tree,
He didn’t take plums nor plums did he leave.
How can this be?
7. Four couples spend an evening together. Their first names are Elizabeth, Jeanne, Mary, Anne, Henry, Peter, Louis, and Roger.
At a given time:
Henry’s wife is not dancing with her husband, but with Elizabeth’s husband.
Roger and Anne are not dancing.
Peter is playing the trumpet, with Mary at the piano.
If Anne’s husband is not Peter, who is Roger’s wife?
8. What word can be written forward, backward or upside down while still remaining the same word?
9. These words belong to the same logical family:
10. Two days ago Lilly was 7 years old. Next year she will turn 10. How can this be?