Direction (66-70): What should come in place of the question mark(?) in the following number series?

10    11    13    21    69    ?

Direction (66-70): What should come in place of the question mark(?) in the following number series?

4    6    14    44  ?   892

Direction (66-70): What should come in place of the question mark(?) in the following number series?

12664   34    20  14 ?

A man starts going for morning walk every day. The distance walked by him on the first day was 2 km. Everyday he walks half of the distance walked on the previous days. What can be the maximum total distance walked by him in his life-time?

Which number among the following does not belong to the series 8, 27, 50, 125, 343?

What will come in place of the question mark (?) in each of the following series?

15     21    33    51     75    (?) 

What will come in place of the question mark (?) in each of the following series?

15     19    83   119     631     (?)

What will come in place of the question mark (?) in each of the following series?

15     18    16   19     17    20    ?