1. The sum of the first 15 multiples of 8 is
2. Next term of the AP √2, 3√2, 5√2, ....... is
3. First four terms of the sequence an = 2n + 3 are
4. 20th term of the AP -5, -3, -1, 1, is
5. If nth term of an AP is 7 - 4n, then its common difference is
6. If the sum of first n terms of an AP is An + Bn² where A and B are constants. The common difference of AP will be
7. The 10th term of the sequence √3, \(\sqrt{12}\), \(\sqrt{27}\); ...... is
8. Sum of n terms of the series
9. If p - 1, p + 3, 3p - 1 are in AP, then p is equal to
10. The sum of the first 2n terms of the AP: 2, 5, 8, .... is equal to sum of the first n terms of the AP: 57, 59, 61, ... then n is equal to.