The sum of the first three consecutive terms of an ap is 9 and the sum of theri squares is 35. Find Sn .
Answer = n² or n(6-n)

Question

The sum of the first three consecutive terms of an ap is 9 and the
sum of theri squares is 35 Find Sn
Answer = n2 or n(6-n)

Abhishek Kumar · Accepted Answer

The sum of the first three consecutive terms of an ap is 9 and the sum of theri squares is 35. Find Sn . Answer = n2 or n(6-n)