The answer to this problem is 192.
2000 - 347 = 1653
The range of these numbers is 347 - 155 = 192.
2000 - 155 = 1845
703 minus 548 is 155.
375 - 28 = 347
-140
267 - 112 = 155
529
223.7
It must have been 347 BC plus or minus a couple of years.
They are considered genius level. A score of 100, plus or minus 10 points, is considered average.
There is no mode, as all the numbers are different. A mode is the most commonly occurring number in a list.