Mahindra Satyam aptitude placement paper

The aptitude test conducted by Mahindra Satyam at our college for campus placements was quite easy. You can expect questions like those on Numbers, HCF-LCM, Ages, Problems on trains, Time and Distance, Simple Interest, Problems on boats etc.

Some of the questions in our question paper were:
The difference between the place value and face value of 9 in the 63894531 is:
a) 89981 b) 89991 c) 88999 d) 89999

A train 150 m long passes a km stone in 15 seconds and another train of the same length travelling in opposite direction in 8 second. The speed of the second train is :
a) 82 km/hr b) 90 km/hr c) 96 km/hr d) 99 km/hr

3636.33+563.563-4.5678=?
a) 4234.3252 b) 4195.3253 c) 4195.3252 d) 419532.53

In this question, a series of numbers is provided. Choose the number which should fill the ‘?’ to follow the pattern of the series.

2, 6, 12, 20, 30, ‘?’

a.) 44 b.) 40 c.) 36 d.) 42 e.) 34

After his office, in the evening a man goes facing the sun. Then he turns to his right, then he turns to his left and then turns to his left and them to his right. In which direction is he moving?
a.) South b.) North c.) East d.) West e.) North-east