Question

complete the series
1/3,3/8,7/18,?,31/78,63/158
5,7,9,8,11,16,15,?,?
9,6,16,10,30,18,?,34
find the wrong number
5,7,11,19,35,66,121
81,121,169,289,361
0,6,20,56,72,110
311,151,71,31,21,1
2,3,6,10,18,20
226,343,352,415,613,823

Answer 1

1.   15 / 38             1+2+4+8  /  3+5+10+20
2.      ?  , 13  or 23
3.  58                 9 + 7 + 14 + 28

wrong number

1.   66      perhaps 67
2.  289
3.  56      should be 42   
4.  21   should be 11 
5. 
6.  343