Rhythmic, artistic and trampoline are three Olympic disciplines of which sport?

Three days after her death in 1991, which actress, a former wife of George C. Scott, won an Emmy for playing Murphy Bro… Three days before it was sunk by the British navy in May 1941, which German battleship sank HMS Hood? How many items make up a gross? What is the name of a three-dimensional figure with 8 plane faces? Three Georgians have served as Speaker of the House: two Democrats and, from 1995 to 1999, which Republican? Sensory, motor and mixed are the three kinds of what body structures? What three-letter name is shared by U2's breakthrough 1983 album and the band Eric Burdon teamed with for "Spill the Wi… Which instant-messaging program, introduced in November 1996, took its three-letter name from the phrase "I seek you"?