1+5=12〔(1+5)×2〕 2+10=24〔(2+10)×2〕
3+15=36〔(3+15)×2〕
那么 :5+25=60〔(5+25)×2〕
25-5=20除以2等于10,所以是510
5 + 25 = 60
规律一:
(1 + 5) * 2 = 12; (2 + 10) * 2 = 24; (3 + 15) * 2 = 36, 所以 (5 + 25) * 2 = 60
规律二:
(5 - 1) * 3 = 12; (10 - 2 ) * 3 = 24; (15 - 3) * 3 = 36, 所以 (25 - 5) * 3 = 60