# 7.03 Arithmetic series

## Interactive practice questions

Find the sum of the first $10$10 terms of the arithmetic sequence defined by $a=6$a=6 and $d=3$d=3.

Easy
Approx 3 minutes
Find the sum of the first $10$10 terms of the arithmetic sequence defined by $a=-18$a=18 and $d=4$d=4.
Find the sum of the first $15$15 terms in the arithmetic sequence $2+6+10$2+6+10 $+$+ ...
Evaluate the following sum up to the first $15$15 terms:
$-17-15-13$171513 $-$ ...