Neco Model Questions Vol1 2019 Mathematics Question 36

Practice objective / multiple choice question 36 from the 2019 Neco Model Questions Vol1 Mathematics examination.

Neco Model Questions Vol1 2019 Mathematics Objective / Multiple Choice Medium Difficulty
Question 36 NECO_MODEL_QUESTIONS_VOL1 • 2019 • MATHEMATICS • objective

The sum of the first n terms of a geometric progression is given by \(S_n = 12 - 12\left(\frac{1}{3}\right)^{n}\). Determine the common ratio and the first term of the progression, and then find the sum of its first 5 terms.

Answer Options

A. Common ratio = 1/3; first term = 9; sum of first 5 terms = 1089/81
B. Common ratio = 1/3; first term = 8; sum of first 5 terms = 1000/81
Correct Answer C. Common ratio = 1/3; first term = 8; sum of first 5 terms = 968/81
D. Common ratio = 2/3; first term = 8; sum of first 5 terms = 1120/81
Correct Answer
C
Correct Option:
Common ratio = 1/3; first term = 8; sum of first 5 terms = 968/81

About This Question

This is Neco Model Questions Vol1 2019 Mathematics Question 36. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Mathematics examination.

Difficulty level: Medium .

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