Jackson Strive


You and I spot a $20 bill on the street. To divide it, we agree to an auction: Each of us will write down a bid, and the high bidder will keep the $20 but pay the amount of his own bid to the other player. If we submit the same bid then we’ll split the $20. What should you bid?

Click for Answer

Green Ties


The Martian Census Bureau compiled the marital history of every male and female Martian, living and dead:

  • Never married: 6,823,041
  • Married once: 7,354,016
  • Married twice: 1,600,897
  • Married three times: 171,013
  • Married four times: 2,682

What’s wrong with these figures?

Click for Answer

Fields of Gold

fields of gold puzzle

Which of the yellow areas is larger?

Click for Answer

Picture This


We must assemble a jigsaw puzzle that contains 100 pieces. If a “move” consists of connecting two sections (even a section containing a single piece), what’s the minimum number of moves we must make to complete the puzzle?

Click for Answer

Defense Posture


You walk into Arlington, Virginia. As the Pentagon comes into view, you’ll be able to see either two or three sides of the building. Which is more likely?

Click for Answer

Door Jam

You’re confronted with two doors. One leads to fortune, the other to death, but you don’t know which is which.

The doors are attended by two guards. One always lies, and the other always tells the truth, but again you don’t know which is which.

You can ask one question of one guard. What should you ask?

Click for Answer

Spirit Reading


In a certain town, 90 percent of the residents drink coffee, 80 percent drink tea, 70 percent drink whiskey, and 60 percent drink gin. No one drinks all four. What percent of the residents drink liquor?

Click for Answer



A baseball pitcher played an entire game while throwing the minimum possible number of pitches. The game was not called before completion. How many pitches did he throw?

Click for Answer