MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 286
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
Mechanical TVIn 1925, the first telecast in the U.S. of objects in motion was invented by Charles Jenkins. He called it "visions by radio." The first mechanical TV system broadcast used 48 scanning lines and showed a model of Dutch windmill with its blades turning. |