Problem 686

  Write the arithmetic sequence that has four arithmetic means between -20 and 20.   Solution:-   The rule of arithmetic sequence {a, a+d, a+2d, a+3d, … } a =…

Problem 633

What are the next four terms in the following arithmetic sequence? -7, -2, 3, 8, …   Solution:-   First we find the value of d = -2 – (-7)…

Problem 632

What is the d value in the following arithmetic sequence? -7, -2, 3, 8, … Solution:- The value of d = second term – first term d = -2 –…

Problem 599

  Find the sum. 1 + 6 + 11+ ……+(5n – 4)   Solution :-   We are given an arithmetic sequence. The first last terms of this sequence are…

Problem 589

  Find the 10th term of an arithmetic sequence if t1 = 2.1 and t4 = 1.83.   Solution:-   1.83 = 2.1+(4-1)d d = -0.09 n10th = 2.1+(10-1)*(-0.09) n10th = 1.29