MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 401
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
Reuben Leon KahnBorn 26 Jul 1887; died 1979 .Major Reuben Leon Kahn was an American immunologist best known for his investigations of blood reactions, while a member of the U.S. Army Medical Service Corps, which led him to develop a procedure that became an efficient test for syphilis (1918). This is now the standard serological test. |