Wednesday 1 May 2013

Infosys 2012 Placement Paper I

Infosys Anlytical reasoning and verbal ability questions as on March 2012,Hydrabad


Infosys Test consists two section
Written Test
Non-Technical Interview (interviewer is a HR )
No of Questions : 70
Time limit : 75 Minutes
Written Test
Aptitude  Test (30Questions and 40 min).
Verbal Ability (40Questions and 35 min)


1.There is a escalator and 2 persons move down it.A takes 50 steps and B takes 75 steps while the escalator is moving down. Given that the time taken by A to take 1 step is equal to time taken by B to take 3 steps. Find the no. of steps in the escalator while it is staionary.
Solution (not sure):
If A takes 1 step in one second, then B takes 3 steps in one second. If A takes t1 seconds to take 50 steps, then B takes 150 steps in t1 seconds.
For B, to take 150 steps he requires t1 seconds,
then to take 75 steps he requires t1/2 seconds.
So now, s1=50, t1 = t1 & s2=75, t2=t1/2
ans= (s1*t2 ~ s2*t1) / (t1 ~ t2) which gives 100.
so 100 steps is the answer