Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 177
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
Pendulum clock patentIn 1657, the first pendulum clock was patented by its inventor, Christiaan Huygens. Although others may have worked in this field before him, Huygens made major advances in building a practical clock. He needed time accuracy for his astronomical measurements. |