Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 142
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
Push-button phoneIn 1959, an experimental push-button phone was tested by the Southern New England Telephone Company (New Haven, Conn.), to see if customers dial fewer wrong numbers using the new design. |