MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 127
The first user who solved this task is Brian Macpherson.
#brainteasers #math #riddles
BatteryIn 1940, a leak-proof flashlight battery (Ray-o-Vac) was patented in the U.S. by Herman Anthony (No. 2,198,423). |