MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series
Problem
In an arithmetic progression, the 12th term is 37 and the 25th term is 79.
(i) Determine the first term and the common difference.
(ii) Calculate the 60th term.
(iii) Find the smallest positive integer n for which the nth term is exactly 487. Justify your answer with appropriate calculations.