Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 129
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
Frederick SoddyDied 22 Sep 1956 at age 79 (born 2 Sep 1877). English chemist and physicist who received the Nobel Prize for Chemistry in 1921 for investigating radioactive substances. He suggested that different elements produced in different radioactive transformations were capable of occupying the same place on the Periodic Table, and on 18 Feb 1913 he named such species "isotopes" from Greek words meaning “same place.” He is credited, along with others, with the discovery of the element protactinium in 1917. |