What is the 30th term of the arithmetic series 3, 7, 11, 15...? Precalculus Sequences Arithmetic Sequences 1 Answer Binayaka C. Jun 21, 2018 #30# th term is #119# Explanation: #S={ 3,7,11,15....}# , first term is #a=3# , common difference is #d=7-3=4 ; n# th term is #t_n =a+(n-1)d ; n=30# #:. t_30 =3+(30-1)4=3+116=119# #30# th term is #119# [Ans] Answer link Related questions What is a descending arithmetic sequence? What is an arithmetic sequence? How do I find the first term of an arithmetic sequence? How do I find the indicated term of an arithmetic sequence? How do I find the #n#th term of an arithmetic sequence? What is an example of an arithmetic sequence? How do I find the common difference of an arithmetic sequence? How do I find the common difference of the arithmetic sequence 2, 5, 8, 11,...? How do I find the common difference of the arithmetic sequence 5, 9, 13, 17,...? What is the common difference of the arithmetic sequence 5, 4.5, 4, 3.5,...? See all questions in Arithmetic Sequences Impact of this question 12498 views around the world You can reuse this answer Creative Commons License