Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 85
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
Solar airplane patentIn 1963, the first U.S. patent on a "solar airplane vehicle" was issued to Elmer G. Johnson of Fairborn, Ohio (No. 3,089,670). |