Nth term - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 1997

The nth term of a sequence is given 3^{1 - n} , find the sum of the first terms of the sequence.

A. \(\frac{13}{9}\)
B. 1
C. \(\frac{1}{3}\)
D. \(\frac{1}{9}\)

Question 7:

• JAMB 2021

What is the n-th term of the sequence 2, 6, 12, 20...?

A. 4n - 2
B. 2(3^{n - 1})
C. N² + n
D. N² + 3n + 2