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[" (4) If "(m+1)" " termofan A.P,istwice...

[" (4) If "(m+1)" " termofan A.P,istwicethe "(n+1)^(" th ")" provethat "(3m+1)^(" th ")" term is twice the "],[" ( "50" .If an "A" .P.consists of nterns with first term and "n^(" th ")" term "l" show that the sum of the "m^(2)],[" (to) term from the beginning and the "m" therm from the cendis "(a+1)" ."],[[" (b) How many numberslie between "10" and "300," which when divided by "4" leavea remainde "," in a "," in a "," in a "]],[," 3? "]

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