MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 121
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
Solar spectrumIn 1871, spectroscopic observations of an eclipse in India made by French astronomer Jules Janssen led him to propose that the corona, normally only visible during a solar eclipse, is a physical part of the Sun and is composed of both hot gases and cooler particles.Image: Illustrated London News, [60], 20 Jan 1872. |