MATH PUZZLE: Can you replace...
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 158
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles
Transistor calculatorIn 1954, in Poughkeepsie, IBM displayed a large all-transistor calculator needing only 5% of the power of comparable electronic ones. Three years later, in 1957, IBM introduced the IBM 608, the first all-transistor commercial calculator. |