If S<sub>n</sub> denote the sum of the first n terms of an A.P. If S<sub>2n</sub> = 3S<sub&gt…

The 2<sup>nd</sup> and 6<sup>th</sup> term of an arithmetic progression are 8 and 20 respectivel…

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

If the sum of first n even natural number is equal to k times the sum of first n odd natural numbers, then k =

The sum of n terms of two A.P.’s are in the ratio 5n + 4 : 9n + 6. Then, the ratio of their 18<sup>th</su…

If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:

Given A = 2<sup>65</sup> and B = (2<sup>64</sup> + 2<sup>63</sup> + 2<sup>62&l…

Which term of the A.P. 92, 88, 84, 80, ...... is 0?