How many different falling pieces are there in the game Tetris?

More Questions:

Who was the Phillips screw design named after?

Which racing team introduced a six-wheeled race car in 1974 and began racing it in 1976?

The Newbery Medal is awarded annually for what genre of writing?

Which US state is home to Newberry National Volcanic Monument?

Of the US states that border Mexico, which shares the shortest border?

The port of Piraeus serves which European capital?

What US city is known as the "City of Brotherly Love"?

What CCR front man made his solo concert debut at the first Farm Aid in 1985?

Which character was most seriously injured by the winged monkeys in the film "The Wizard of Oz"?

Who founded the John Birch Society?

What was the second successful mass produced car by the Ford Motor Company called?

Which modern gymnastics event made its first appearance at the 2000 Sydney Olympics?

Which US president lived in The Hermitage?

William de Tracy played a part in the murder of which "chief overseer"?

Who was the only person to be nearby at three different US presidential assassinations?