Michigan State University - Diagnostic Exam

 [next]  [prev]  [bottom]  [up] 

5.6

  •   Which of the following is equal to the sum 1 + 2 + (2)2 + (2)3 + … + (2)30 ?

    a) 231 - 1 b) 1 - 231 c) 230 - 1 d) 1 + 231 e) 2(230 + 1)

Solution:

1 - 231 1 + 2 + (2 )2 + (2)3 + ...+ (2)30 = ------- 1 - 2 = 231 - 1

Diagnostic:

If you miss this question please review Geometric Series.

 [next]  [prev]  [top]  [up] 

July 15, 2008