Sapient aptitude placement paper

Sapient conducted a drive to hire freshers through internal references some months back. A friend of mine referred me and I am lucky that I ultmately got place there after a wait of one long year. As freshers, they conducted an aptitude test for us which had questions on quantitative aptitude. Some the questions they asked us are:

Complete the following series.

3, 4, 6, 9, 13, __, __
a.) 17, 25 b.) 17, 26 c.) 18, 24 d.) 18, 25

In a certain language DEAF is coded as 4, what will be the code for ACE?
a.) 2 b.) 1 c.) 3 d.) 4 e.) 7

X is twice as good workman as Y and together they finish the piece of work in 28 days. The number of days taken by X alone to finish the same work is
a) 42 days b) 36 days c) 25 days d) 24 days

What is the least number that should be subtracted from 884740 to obtain a perfect cube?
a) 8 b) 9 c) 4 d) 7

A man travels 20 km to the north, turns left and travels 8 km, and then again turns right, covers another 10 km and then turns right and travels another 8 km. How far is he from the starting point?
a.) 8 km b.) 40 km c.) 30 km d.) 20 km e.) 46 km

I hope they are helpful to my other friends as well.