题目内容
观察数列的特点,用适当的数填空:(1)2,1,( ),
,
,( ),
;
(2)-1,4,-9,16,-25,( ),-49;
(3)1,9,25,( ),81,…;
(4)1,0,
,0,
,0,( ),0,
,….
(1)
(2)36 (3)49 (4) ![]()
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题目内容
观察数列的特点,用适当的数填空:(1)2,1,( ),
,
,( ),
;
(2)-1,4,-9,16,-25,( ),-49;
(3)1,9,25,( ),81,…;
(4)1,0,
,0,
,0,( ),0,
,….
(1)
(2)36 (3)49 (4) ![]()