V Virat Bhati π Tutor III β 7.23K Points π Reasoning Q. Complete the series : 1, 2, 6, 15, 31,....? (A) 56 (B) 55 (C) 57 (D) 58 ποΈ Show Answer π Share β‘Menu β Correct Answer: (A) 56 You must be Logged in to update hint/solution π¬ Discussion π¬ Comment