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Class 10 Mathematics Arithmetic Progressions (AP)Finding the $n$th term of an APMedium

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Find the (20)th term of the AP (2.5,5,7.5,\ldots).

Answer and explanation

Correct answer: (50)

Here (a=2.5), (d=2.5), so (a_{20}=2.5+19\times2.5=50). In decimal APs, keep multiplication exact.

Related tags

Ap Decimal-Ap Nth-Term Class10 Finding The $N$Th Term Of An Ap Finding The N Th Term Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap

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