Question:
3 Maximum mark 5 with GDC In an arithmetic series the first
Last updated: 11/11/2023
![3 Maximum mark 5 with GDC In an arithmetic series the first](https://media.kunduz.com/media/sug-question-candidate/20231111183012011925-6244031.jpg?h=512)
3 Maximum mark 5 with GDC In an arithmetic series the first term is 7 and the sum of the first 20 terms is 620 a Find the common difference b Find the value of the 78th term