MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 56
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
StethoscopeIn 1882, a stethoscope of the now classic design, invented by William F. Ford was issued a U.S. patent (No. 257,487). |