 <translate> 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.
 <yor> Ìbéèrè náà ni pé: 80 370 860 1550 2440? Àwọn àyè: (A) Ẹgbẹ̀rún mẹ́sàn-án (B) 840 (C) 750 (D) 860 (E) 3530 ì ì Ìdánwò lẹ́sẹẹsẹ: 10^2 - 20 = 80 20 ní ẹ̀ẹ̀kan - 30 jẹ́ 370 30 ní ẹ̀ẹ̀kan - 40 = 860 40 ní ẹ̀ẹ̀kan - 50 = 1550 50 ní ẹ̀ẹ̀kan - 60 = 2440 60 ní ẹ̀ẹ̀kan - 70 jẹ́ 3530. 