Each week we test readers on their claim knowledge. This week's question is:

The earthquake that struck off the coast of Indonesia hit a 7.5 on the Richter scale. According to a 2008 U.S. Geological Survey study, what is the probability of an earthquake with a 6.7 magnitude or greater hitting the U.S. within the next 30 years?

A. 58% chance
B. 32% chance
C. 99% chance
D. 76% chance

Answer Here!

Last week's question was:

The chipped Lalique sculpture that you can read about here was worth quite a pretty penny at $70,000. Compared to the most expensive sculpture ever sold, though, it's almost unimpressive. How much did the most expensive sculpture sell for?

A. $71.8 million
B. $104.3 million
C. $3.6 million
D. $1.7 billion

An impressive 44 percent of readers were right on the money when they guessed that the most expensive sculpture ever sold went for $104.3 million. The work, done by Alberto Giacometti in 1961, was called "L'Homme qui marche I." The bronze statue stands six feet tall, and was sold earlier this year at Sotheby's of London.

Here are the final results for last week:

A. 35%
B. 44%
C. 18%
D. 3%