Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 46
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
Solar batteryIn 1955, a solar energy battery was first shipped from an American commercial factory, National Fabricated Products, Inc., Chicago, Ill. The battery was disc shaped, about the size of a half-dollar, with two terminals. It was hermetically sealed, and provided about half of a volt of electricity. |