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Find the middle term of the AP 6,13,20......... 216

Answer» The given AP is 6,13,20,...,216a = 6 and l = 216So the middle term will be average of a and lHence middle term = {tex}=\\frac{\\mathrm a+\\mathrm l}2{/tex}{tex}=\\frac{6+216}2=\\frac{222}2{/tex}\xa0=111So the middle term of this AP is 111


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