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Number Theory
Level
2
Find the next term in the series
10000,11000,9900,10890,9801,_______
The answer is 10781.
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The pattern of the series follows as... we add and subtract 10% of a term to obtain the next term of the series 10000+(10% of 10000)=11000 ; 11000-(10% of 11000)=9900; 9900+(10% of 9900)=10890; 10890-(10% of 10890)=9801; Finally 9801+(10% of 9801)= 1 0 7 8 1