Question 1111662: 60, 30, 20, 15,
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! 60, 30, 20, 15, 12.5, 11.25, ...
The first differences for 60, 30, 20, 15 are
60 - 30 = 20,
30 - 20 = 10,
20 - 15 = 5
Each difference is half of the difference before.
The next differences would be
 ,
 , etc.
so, the next two terms are
 and  .
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