Below, we've listed the planets in the Solar System in a different order. According to this order, in which order should the two final planets appear?
Jupiter, Saturn, Uranus, Neptune, Earth, Mars, Pluto, ?, ?.
Mercury, then Venus.
In Earth terms, Jupiter's day is 9.84 hours long, Saturn's is 10.2 hours, Uranus 17.9 hours, Neptune 19.1 hours, Earth 24 hours, Mars 24.6 hours, Pluto 6.39 days. Mercury's day is 59 earth days and Venus's day is 243 earth days long.
Today's brain teaser courtesy of Braingle.com.