Section A: Board level Questions
- Find the 20th term from the last term of the AP: $3, 8, 13, \dots, 253$.
- If the sum of the first $n$ terms of an AP is $4n - n^2$, what is the first term? What is the 10th term?
- Find the sum of all three-digit natural numbers which are divisible by 7.
- The sum of the 4th and 8th terms of an AP is 24 and the sum of the 6th and 10th terms is 44. Find the first three terms of the AP.
- How many terms of the AP: $24, 21, 18, \dots$ must be taken so that their sum is 78?
