if the first and (2n-1)th term of an AP,GP and HP are equal and their nth term respectively a,b,c, then which of the following is correct? (a)a≥b≥c. (b)a+c=b. (c) ac-b^2=0. (d) both, option (a)&(b)
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(a) is the answer and if it is right then mark me as the brainliest
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