Calculate the number 631
NUMBERMANIA: Calculate the number 631 using numbers [1, 4, 8, 8, 83, 323] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 1
#brainteasers #math #numbermania
Edison patentIn 1897, one of the various patents for a "Phonograph" was issued to Thomas Alva Edison (No.575151). It was one of several patents relating to his invention received by the patent office on 3 Dec 1890 that were issued on various dates between 27 Jun 1893 and 30 Sep 1898. |