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

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In an arithmetic progression, a₁₃ = 77 and a₂₉ = 205. What is the value of a₄₇?

Answer and explanation

Correct answer: 349

The common difference is d = (205 − 77) ÷ (29 − 13) = 8. From a₂₉ to a₄₇ there are 18 steps, so a₄₇ = 205 + 18 × 8 = 349.

Related tags

Arithmetic Progression Nth Term Finding The $N$Th Term Of An Ap Finding The N Th Term Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics Class 10 Mcq

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