找规律填数习题
1.仔细观察每一排数的排列有什么规律,然后按规律在()内填上适当的数.
(1)2,4,8,16,(),64.
(2)1,4,9,16,(),36,49.64.
(3)1,4,7,10,13,(),19,21.
(4)1,4,16,64,(),1024,4096.
(5)2,3,5,9,17,(),65,129.
(6)15,4,13,4,11,4,(),().
(7)8,15,10,13,12,11,(),().