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Class 10 Mathematics Arithmetic Progressions (AP)Introduction to APs and common difference.Expert

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The (n)th term of a sequence is (a_n=11-3(n-1)). What are the first term and common difference?

Answer and explanation

Correct answer: (a_1=11,d=-3)

Putting (n=1) gives the first term (11), and each step adds (-3). In exams, recognize the form (a+d(n-1)).

Related tags

Ap Nth Term First Term Introduction To Aps And Common Difference.Introduction To Aps And Common Difference Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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