# Try To Solve These Impossible Problems From Across History

## Common sense is not so common. The first problem is from a 1984 IQ Test. Ready?

Created by Terry Stein
On Aug 1, 2019

YOU NAILED IT!

YOU NAILED IT!

Well done! Only 5% of people can solve this problem from a 1984 IQ drill.

You’re highly intuitive, and you tend to look at situations from multiple perspectives. Like most geniuses, you curse a lot, you hate cold showers, and you stay up late at night. You are definitely a dog person, and you drink 4-7 cups of coffee a day.

By the way, if a man buys a horse for \$60, sells it for \$70, buys it back for \$80, and sells it again for \$90, the trick is to approach each transaction as separate:

-60 + 70 = 10
-80 + 90 = 10

The man made \$10 with each transaction, therefore his profit adds up to \$20.

WRONG!

WRONG!

If a man buys a horse for \$60, sells it for \$70, buys it back for \$80, and sells it again for \$90, the trick is to approach each transaction as separate:

-60 + 70 = 10
-80 + 90 = 10

The man made \$10 with each transaction, therefore his profit adds up to \$20.

Did you approach it differently? Let us know in the comments, and SHARE this problem to test everyone you know.

The first problem is from a 1984 IQ Test. Ready?