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Class 10 Mathematics Arithmetic Progressions (AP)Finding the sum of the first (n) terms of an APMedium

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Find the sum of the first (19) terms of the arithmetic progression (4,14,24,\ldots).

Answer and explanation

Correct answer: (1786)

The nineteenth term is (184), so (S_{19}=\frac{19}{2}(4+184)=1786). With a large difference, find the last term first.

Related tags

Ap Sum Medium Last Term Finding The Sum Of The First (N) Terms Of An Ap Finding The Sum Of The First N Terms Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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