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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 all numbers divisible by (5) between (100) and (200).

Answer and explanation

Correct answer: (3150)

The numbers are (105,110,\ldots,195), and the sum of (19) terms is (2850). The word between often excludes endpoints.

Related tags

Divisibility Between Numbers Ap Sum 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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