Question Practice

Explain the formula for finding the sum of the first n terms of an AP.

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA

Single Answer MCQ

Q-00002212

S_n = n/2 * (2a_1 + (n-1)d)

S_n = n * (a_1 + d)

S_n = n * (2a_1 + d)

S_n = n/2 * (a_1 + a_n)

Keep Practising

Students who asked this also explored

Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

Q1.

What is an arithmetic progression (AP) and how is it defined?

Q2.

Define the common difference in an arithmetic progression.

Q3.

Find the first negative term in the AP: 121, 117, 113, ...

Q4.

If the sum of the third and seventh terms of an AP is 6 and their product is 8, find the sum of the first sixteen terms.