MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series
Problem
AP A has first term 4 and common difference 6.
AP B has first term 10 and common difference 4.
After 20 terms, which AP has the greater sum of terms?
(a) Cannot be decided with given data
(b) Sum of AP B is greater
(c) Sum of AP A is greater
(d) Both sums are equal