Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 447
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
Hubble telescopeIn 1999, space shuttle Discovery's astronauts finished their mainenance work on the Hubble Space Telescope, installing correcting optics to repair problems due to a design flaw in the mirror. The first images the Hubble Telescope took after its original launch were disappointingly fuzzy, but after this repair mission the instrument returned crisp images of a clarity never before possible from terrestrial observatories.« |