1003107204

Level: 
Project ID: 
1003107204
Accepted: 
1
Clonable: 
0
Easy: 
0
Positive numbers which when divided by 3 leave a remainder of 2 are terms of an increasing arithmetic sequence. The sum of the first 15 terms is 480. Find the 3rd term of this sequence.
17
11
20
5
23