Question: 5,9,19,31,51,__\nOptions:\n(A) 84\n(B) 80\n(C) 81\n(D) 82\n(E) 83 Let's think first. Some random reasoning:
User
(9+5) +5 = 19\n(16+9) +6 = 31\n(28+16)+7 = 51\n(48+28)+8 = 84 The final answer: (A).
Assistant