The Ratio of sum of n terms of the two AP’s is (n +1) : (n–1) then the Ratio of their mth terms is
(a) (m + 1) : 2m
(b) (m + 1) : (m –1)
(c) (2m –1 :(m + 1)
(d) m : (m – 1)
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the answer is b) (m+1):(m-1)
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