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

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Find the (9)th term of the AP (\frac{5}{4},\frac{7}{4},\frac{9}{4},\frac{11}{4},\ldots).

Answer and explanation

Correct answer: (\frac{21}{4})

Here (d=\frac{1}{2}), so (a_9=\frac{5}{4}+8\times\frac{1}{2}=\frac{21}{4}). Use the fractional difference carefully.

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Ap Nth-Term Easy 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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