Solve this: Q.2. If the common difference of an A.P. is 3, then a 20 - a 15 is (A) 5 (B) 3 (C) 15 (D) 20 Share with your friends Share 0 Khushi Mattu answered this Hope it helps 3 View Full Answer Samson answered this 15 1 Charulatha answered this Thank u 1