(1) (6) (16) ( ) (51) ( 76) 找规律

题目

(1) (6) (16) ( ) (51) ( 76) 找规律
（1) (6) (16) ( ) (51) ( 76)
（ ) ( ) (21) ( ) (35) ( )
(8) (15) (10) (13) (12) (11) ( ) ( )

答案

(1) (6) (16) (31 ) (51) ( 76) 1+5=66+10=1616+15=3131+20=5151+25=76（7 ) (14 ) (21) (28 ) (35) ( 42)1*7=72*7=143*7=214*7=285*7=356*7=42(8) (15) (10) (13) (12) (11) (14 ) (9 )奇数项：8+2=1010+2=1212+2=1...