R Rakesh Yadav π Tutor III β 5.76K Points π Reasoning Q. Complete the series: 1, 3, 7, 13, 21, ? (A) 31 (B) 29 (C) 33 (D) 27 ποΈ Show Answer π Share β‘Menu β Correct Answer: (A) 31 You must be Logged in to update hint/solution π¬ Discussion π¬ Comment