Sum of A.P: Solve the given questions — task. Mathematics CBSE, Class 10.

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Answer variants:

1274

1365

If the sum of the first '\(n\)' terms of an \(A.P\). is

8 n^{2} - n

, then answer the following question.

i) What is the first number?

ii) What is the sum of first and second number?

iii) Find out the number on the 13\(^{th}\).

Did you find an error?

14. Sum of A.P: Solve the given questions