1. If the sum of the first m terms of an AP is n and the sum of its n terms is m, then the sum of its (m + n) terms will be
2. If nth term of an AP is given by fn = 3n + 4, find the common difference of the AP
3. The sum of first ten natural number is
4. Find the 15th term of an AP -2, -5, -8, ....
5. The 6th term from the end of the AP: 5, 2, -1, -4, ...., -31, is
6. Which term of the AP: 27, 24, 21, ......... is zero?
7. The sum of first n terms of the series a, 3a, 5a, ........ is
8. 37th term of the AP: √x, 3√x, 5√x, ........ is
9. Which term of the AP: 92, 88, 84, 80 ... is 0?
10. The common difference of the AP ... -4, -2, 0, 2, .... is