Sequences And Series

Question 1

n³ summation

Answer 1

[n(n+1)/2 ]²

Question 2

If a, b, c are in AP… How are they connected?

Answer 2

• 2b = a + c
• 2(middle term) = term b4 + term after

Question 3

n² summation

Answer 3

n(n+1)(2n + 1)/6