Problem 740

Write the geometric sequence that has four geometric means between 1and 1,024.   Solution:-   an and  a1  are given. Find the common ratio by using the explicit formula for geometric…

Problem 737

Find the sum of the first five terms of the arithmetic series: an = 2n +2.   Solution:-   Find a1 and  a5  and use the formula for the sum of an…

Problem 736

Find the 100th term of the sequence: -4, -2, 0, 2, ….   Solution:-   Find the common difference and use the explicit formula for arithmetic sequences:  . an = a1 +…