Post Utme Uniosun 2018 Mathematics Question 38

Practice objective / multiple choice question 38 from the 2018 Post Utme Uniosun Mathematics examination.

Post Utme Uniosun 2018 Mathematics Objective / Multiple Choice
Question 38 POST_UTME_UNIOSUN • 2018 • MATHEMATICS • objective

In a geometric sequence with first term (a) and common ratio (r), the sum of the first (n) terms is given by the formula \(S_n = \frac{a r^n - 1\) \ }{r - 1}\)\)). If the sum of the first 8 terms of the sequence is 512, and the 9th term is 256, what is the value of (a)?

Answer Options

Correct Answer A. 128
B. 256
C. 512
D. 1024
Correct Answer
A
Correct Option:
128

About This Question

This is Post Utme Uniosun 2018 Mathematics Question 38. It is one of the objective questions from the 2018 Post Utme Uniosun Mathematics examination.

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