Neco Model Questions Vol1 2017 Mathematics Question 21
Practice objective / multiple choice question 21 from the 2017 Neco Model Questions Vol1 Mathematics examination.
The sum of the first \(n\) terms of a sequence is given by \(S_n = a n^{2} + b n + c\), where \(a, b, c\) are constants. It is known that the 4th term of the sequence is \(20\) and the 7th term is \(41\). Determine the values of \(a\) and \(b\) (assume \(c = 0\) because the sum of zero terms is zero) and then find the sum of the first ten terms.
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About This Question
This is Neco Model Questions Vol1 2017 Mathematics Question 21. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Medium .
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