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#AnAP5,8,11...has40terms.Findthelastterm.Alsofindthesumofthelast10terms.

#Atreeisrokenduetothestorminsuchawaythatthetopofthetreetouchesthegroundandmakesanangleof30degreewiththeground.Lengthofthebrokenupperpartofthetreeis8meters.Findtheheightofthetreebeforeitwasbroken