Calculate 12+9
IF 8 + 2 = 16106 and 13 + 6 = 78197 THEN 12 + 9 = ?Correct answers: 139
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles
Radioactive synthesisIn 1936, the first radioactive substance to be produced in the U.S. synthetically was radium E, by bombarding the element bismuth with neutrons. This was achieved by Dr. John Jacob Livingood at the University of California at Berkeley. |