小学数学题(找规律填数)(1) 3,9, 11, 17, 20,( ),( ),36, 41,…(2) 1, 3, 2, 6, 4, ( ),( ),12, ( ),…

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小学数学题(找规律填数)(1)    3,9, 11, 17, 20,(  ),(  ),36, 41,…(2)    1, 3, 2, 6, 4, (  ),(  ),12, (  ),…

小学数学题(找规律填数)(1) 3,9, 11, 17, 20,( ),( ),36, 41,…(2) 1, 3, 2, 6, 4, ( ),( ),12, ( ),…
小学数学题(找规律填数)
(1) 3,9, 11, 17, 20,( ),( ),36, 41,…
(2) 1, 3, 2, 6, 4, ( ),( ),12, ( ),…

小学数学题(找规律填数)(1) 3,9, 11, 17, 20,( ),( ),36, 41,…(2) 1, 3, 2, 6, 4, ( ),( ),12, ( ),…
1. 26 30 加6加2加6加3加6加4就是加6隔着持续往上加
2 1,3,2,6,4,(9),(8),12,(16),.
也是隔项,单数项乘二,偶数项加3

1) 3,9, 11, 17, 20,( 26 ),( 30 ),36, 41,…
(2)1, 3, 2, 6, 4, (9),( 8 ),12, (16 ),....
二小题都是分成二部分看(奇数项/偶数项)就可发现规律

3 11 20 30 41
9 17 26 36
(1) 26 30
1 2 4 8 16
3 6 9 12
(2) 9 8 16

1) 3,9, 11, 17, 20,( 26 ),( 30 ),36, 41,…
(2)1, 3, 2, 6, 4, (9),( 8 ),12, (16 ),....

(1) 26,30
(2) 9 ,7, 11

(1) 26 30
(2) 9 8 16