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

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If (a_n=2n+5), what are the first term and common difference of the AP?

Answer and explanation

Correct answer: (a=7,d=2)

Putting (n=1), (a_1=7), and consecutive terms differ by (2). In a direct formula, (d) is the coefficient of (n).

Related tags

Ap Direct-Formula First-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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