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patterns in alg

54,31,,10.875, ___________, ____________, n=n:--------------

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Steven G. | Education AssistanceEducation Assistance
5.0 5.0 (2 lesson ratings) (2)

If you look at the sequence there is no pattern easily reonizable. You have to take the 54 and subtract 31 this will give you 23 then do 31-19.5 you will get 11.5 this shows that the sequence is the number minus 1/2 of the previous subtraction. In this you subtract 23 then 11.5 then 5.75 and so on. Hope this helps you.