1,3,13,31,33,313,133,331,333,1333,3133,3313,3333那个是合数?

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1,3,13,31,33,313,133,331,333,1333,3133,3313,3333那个是合数?
1,3,13,31,33,313,133,331,333,1333,3133,3313,3333那个是合数?

1,3,13,31,33,313,133,331,333,1333,3133,3313,3333那个是合数?
33=3*11
333=3*3*37
1333=31*43
3133=13*241
3333=3*11*101
一共有33,333,1333,3133,3333

合数:33,133,333,1333,3133,3333

1,3,13,31,33,313,133,331,333,1333,3133,3313,3333那个是合数? 10,31,70,133,( ) 0,1,3,8,22,63,( ) 求救1,6,13,22,33,)8,15,29,57,)65,35,17,3,)2,3,10,15,26,)1,10,31,70,133,)-3,-2,5,24,61,)23,89,43,2,)1913,1,1319,1022,)-7,0,1,2,9,)1/8,9,64,25,) 数学高手进 5年级数学题 禁止不解题(分多)分一分:1,2,3,11,12,13,21,22,23,31,32,33,41,42,43,51,52,53.合数:( )质数:( )偶数:( )奇数:( )按要求填一填:2,47,49,56,99,121,133,201,93,100,156,73,89 请教几道数字推理题:1,3,3,5,7,9,13,15,(),() 1,2,5,14,() 1,10,31,70,133,() 0,1,3,8,22,63,() 1/(11*13*15)+1/(13*15*17)+.+1/(29*31*33)=如何解答 数奥难题:1/11×13×15+1/13×15×17+.1/29×31×33 1/(11*13*15)+1/(13*15*17)+.+1/(29*31*33)= (把百分数化成分数)40%、33%、2.5%(把分数化成百分数)13分之1、250分之133 数字推理:一、157,65,27,11,5,( )二、2,3,13,175,( )三、1,10,31,70,133,( )四、1/2,0.5,3/8,0.25,5/32,( )将括号中的数字填上 求下列矩阵的秩,谁会求下列矩阵的秩2 -1 3 33 1 -5 04 -1 1 31 3 13 -6 找规律.1,3,7,13,( ),31,( ). 1,3,7,13,21,31,43,( ) ⒈(15/2+15/4-15/7-15/8)/(31/2+31/4-31/7-31/8)=?⒉3/2-17/6+37/12-99/20+151/30-293/42+393/56-647/72+811/90=?⒊1/(11*13*15)+1/(13*15*17)+…+1/(29*31*33)=? 帮我算几个找规律的题目.1,1,2,6,1,3,5,7,9,13,15,,0,1,1,2,4,7,13,2,3,10,15,26,1,10,31,70,133,1,2,3,7,46,0,1,3,8,22,63, 4/33×133用奥数来做 3,5,7,9,13,15,21,25,31,33,37,45,( ) 3,5,7,9,13,15,21,25,31,33,37,45,( )