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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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What is the sum of all positive multiples of (4) less than (50)?

Answer and explanation

Correct answer: (312)

The AP is (4,8,\ldots,48) with (12) terms, and the sum is (312). Identifying the last allowed multiple is important.

Related tags

Multiples Less Than Ap Sum Class 10 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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