Placement Papers - L & T Infotech

Hi Friends
I got through in L&T last week conducted in Jaya Engg College, Chennai. It feels great to be a part of such elite & esteemed Organisation. The test took place in college on 1 April & it consisted of following topics:
      
Quantitative Aptitude     30 ques
Verbal               30 ques
Logical Reasoning        30 ques
    
There were 3 sets of papers & everything was professionally managed. I remember only a very few ques..
  
Quantitative  (study RS Aggarwal)
  Profit & LossNumber SystemsLinear EquationsPermutations &    CombinationsTime speed distanceTime & WorkMixtures & Allegations    
All are really simple & basic problems. Concentrate more on fundamentals…..
  
Few ques are:
    
1. In a kilometer race between A and B, A beats B by 9 seconds or 36 meter. Then what is the time taken by B to finish the race.
 Sol: When A has just completed the race it means B is behind by 36mts or completed 966mts. And when a has taken T seconds to complete the race B needs another 9 secs to complete the race; that means B runs another 36mts in 4sec so his speed is 36/9 = 4mts/sec
 So travels 1000mts or 1km in 1000/(36/9)=250secs(time=dist/speed)
 So A completes race in 250-9sec=241secs [refer rs aggarwal quant aptitude race and gameof skills eg problem ]
 
 2. If 4apples and 6oranges cost 13/- and 2apples & 4oranges cost 7/- find cost of one apple and one orange.
 Sol: subtract 2nd eqn from 1st then we have 2a-2o=6 =>1apple and 1orange cost 3/-
 
 3. If a person travels for P km in t hrs and then increases his speed by x km/hr find his new speed.
 a) (p/t)+x  b) pt+x     c)p/x+t   d)pt/x  ans:a
 
 4,5,6 questions based on statistics from a bar graph
 
 7. If a kite is at a height of 50mts from ground and the angle of inclination from a point on ground is 60degree then find length of the kite sting.
 Sol: based on trigonometry heights and distances: sin60=height of kite/length of string(altitude/hypotenuse)  ans:100/(root of 3)
 
 8. If avg. of 6 nos. is 8 and later 2 new nos. are added such that the avg of the present 8 nos is 6 then what is the avg of newly added two nos.
 Sol: avg=total sum of values/ no of objects or observation
 ?  8 =total sum of values of 6 nos /6
 ?  total sum of values of 6 nos=6*8=48
 now when 2 new nos are added applying same formula 6= total sum of values of 8 nos/8
 ?  total sum of values of 8 nos=48 so the value has not changed which means the sum of added 2 nos is zero so avg=zero/2=zero (ans)
 
 9. What % of 4/7 is 4/5?
  Sol: {(4/5)/(4/7)}*100= ans =140%
 
 10. By what % should a person sell an article so as to gain a profit of 24% even after giving a discount of 10 %
 Sol) the easiest way to solve such problems is by assuming the cost price as 100rs
     So to get a profit of 24% means to sell at 100+24=124/-
     So suppose he sold it at 10% discount initially he sells at 90rs so ther is a difference of 34/-
 
 11. One problem on Arithmetic progression
 
 12. One on mean
 
 13. Matrix addition:
 
 14. Find the determinant of a 3*3 matrix? very easy
 
 15. A red light glows every 10sec, yellow every 15sec and red every 18sec. find the number of times all three glow together from 8:00AM to 9:00AM (including both times)
 Sol :  LCM of 10,15,18 = 90
 So every 90 seconds all three glow together so in one hour there are 3600 secs
 So 3600/90=40 times but answer is 41 because they glow at 0th second that is at 8 Am since both times are included.
 
 16. If a man travels at 30km/hr is behind a car by 40mtrs. In 20sec if he leads the car by 20mts then what is speed of car
 
 17. If age of a person is x and his mothers age is 34. then after how many years will the mothers age be twice of the son? (don\'t worry ans will be given in terms of x and we can answer it)
 
 18. One more age problem
    
(please note that a similar ques paper was asked in the past!!!!!!!!!!!!)
  
Verbal test:
 30 questions
 Meanings 3 questions:
 Faux Pas : means a blunder (spelled as fau pa)
 Sanguine
 
 Arranging sentences in order(3 or 4 questions)
 Finding errors in a sentence(3 Qs)
 Reading passage (5 questions ): easy to score atleast 4 marks out of 5 by reading questions and coming to passage to search answer also less time consuming.. Something like a chemistry related passage
 
 Also analogies
 
 Reasoning
 Based on venn diagram 3 questions
 1) Which diagram best represents musician, violinist and instrumentalist
 
 2) polygon, quadrilateral and rhombus
 Not able to remember other one
 
 3)four questions on figure matrices
 3 questions based on giving 3 figures and then we are required to find the 4th fig which comes next in the logical sequence(easy)
    
Next day HR was conducted & no technical was asked… She was very kind & I was asked to talk about myself, academics, achievements extra curricular stuff etc… Its a real professional environment & wish more ppl to get thru!!!!