Assertion and Reasoning — task. Maths CBSE Live product, Class 10.

Assertion (A): Sum of \(n\) terms of an A.P \(5,2,-1-4,-7\) is \(\frac{n}{2}[3n-13]\)

Reason (R): If \(S_n\) is the sum of the first n terms of an A.P., then its nth term an is given by \(a_n=S_n-S_{n-1}\)

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
Assertion (A) is false but reason (R) is true.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Did you find an error?

2. Assertion and Reasoning