找规律,98,89,80,71,( ),( )
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找规律,98,89,80,71,( ),( )
找规律,98,89,80,71,( ),( )
找规律,98,89,80,71,( ),( )
98,89,80,71,(62 ),(53 )
公差是-9
62,53
依次减9
因此后面是62和53
62 53
98-9=89 89-9=80 80-9=71 71-9=62 62-9=53
依次减少9,98,89,80,71,62,53
62 53
减九
98,89,80,71,(62 ),(53 )
前后两数相差9