 
<translate> Tambayar ita ce: 80 370 860 1550 2440? Zaɓuɓɓuka: (A) 900 (B) 840 da kuma (C) 750 (C) 750 (D) 750 (D) 860 (D) 860 (E) 3530 (E) 3530 Tsarin tunani mataki-mataki: 10^2 - 20 = 80 20^2 - 30 ya yi daidai da 370 30^2 - 40 ya yi daidai da 860 40^2 - 50 = 1550 50^2 - 60 ya yi daidai da 2440 60^2 - 70 ya yi daidai da 3530. <eng> The question is: 80 370 860 1550 2440 ?
Options:
(A) 900
(B) 840
(C) 750
(D) 860
(E) 3530
Step-by-step reasoning process: 10^2 - 20 = 80
20^2 - 30 = 370
30^2 - 40 = 860
40^2 - 50 = 1550
50^2 - 60 = 2440
60^2 - 70 = 3530.
 