how to prepare for the written test?

written test is the very first step of any interview.so be prepared with aptitude.better prepare from R.S.Agarwal .it will covers almost all kinds of aptitude questions.
for Mahindra Satyam just revise the following topics......
1.calenders
2.pyramids
3.trains
4.blood relations
5.mixtures
6.Percentages
7.Probability
8.Discount
9.Proportions & Combinations
10.Time&Work (Pipes & cristerms)
11.Time&Distance
12.Reading Comprehension(3)
13.C program basics