1,9,35,91,189,( ) A.301 B.321 C.341 D.361
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1,9,35,91,189,( ) A.301 B.321 C.341 D.361
![1,9,35,91,189,( ) A.301 B.321 C.341 D.361](/uploads/image/z/16839002-2-2.jpg?t=1%2C9%2C35%2C91%2C189%2C%28+%29+A.301+B.321+C.341+D.361)
----------------
1*1
3*3
5*7
7*13
9*21
11*31=341
1,3,7,13,21,31
2,4,6,8,10
答案是C
1*1
3*3
5*7
7*13
9*21
11*31=341
1,3,7,13,21,31
2,4,6,8,10
答案是C
A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = (
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[a,b)×[c,d
a,b ,c ,d
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