Neco 2025 Mathematics Question 37

Practice objective / multiple choice question 37 from the 2025 Neco Mathematics examination.

Neco 2025 Mathematics Objective / Multiple Choice Medium Difficulty
Question 37 NECO • 2025 • MATHEMATICS • objective

The sum of the first \(n\) terms of a series is given by \(S_n = 3n^{2} - n\). Find the 20th term and the sum of the terms from the 21st to the 30th inclusive.

Answer Options

A. 20th term = 120; sum of terms 21 to 30 = 1500
B. 20th term = 118; sum of terms 21 to 30 = 1520
Correct Answer C. 20th term = 116; sum of terms 21 to 30 = 1490
D. 20th term = 115; sum of terms 21 to 30 = 1480
Correct Answer
C
Correct Option:
20th term = 116; sum of terms 21 to 30 = 1490

About This Question

This is Neco 2025 Mathematics Question 37. It is one of the objective questions from the 2025 Neco Mathematics examination.

Difficulty level: Medium .

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