1,3,7,15,( ),( ),127
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1,3,7,15,( ),( ),127
1,3,7,15,( ),( ),127
1,3,7,15,( ),( ),127
1,3,7,15,(31 ),( 63),127
1 3 7 15 ( )( )127
1,3,7,15,( ),( ),127
1 3 7 15 31 63 127的规律是什么
找规律:1,3,7,15,31,( ),127,255.
1 3 7 15 ( ) ( ) 1271 3 7 15 ( ) ( ) 127 找规律
1,3,7,15 ( ) ( )127 .... 规律15,31,63( ) .255 规律
2/1+4/3+8/7+16/15+32/31+64/63+.+128/127
1/2+3/4+7/8+15/16+31/32+63/64+127/128的答案
1/2+3/4+7/8+15/16+31/32+63/64=127/128=?
1 3 7 15 31 63 127的通项公式
数列1 3 7 15 31 63 127的通项公式
1,3,7,15,31,63,127……n是多少
1/2+3/4+7/8+15/16+31/32+63/64+127/128
找规律填数1 3 7 15 31 () 127 255
找规律填数:1,3,7,15,31,( ),127,255.
1,3,7,15,31,(),127,255括号里填多少
1,3,7,15,31,63,127,255,511,1023的第N个是多少?
1,3,7,15,31,(),127找规律添数,