TechMahindra(MBT)  Placement Paper   Aptitude - Numerical   -1 Mar 2006

TechMahindra(MBT)  Placement Paper   Aptitude - Numerical   -1 Mar 2006

  • Posted by  FreshersWorld 
    7 Jan, 2012

    I) Distribution of workers in a factory according to the no.of

    children they have


    1. Total no. of workers in the factory.

            Ans : 200

    2. Total no. of children that all the workers that have between them is

            Ans : 560

    3. The total no. of literate workers is

            Ans : 105

    4. The ratio of literate & illiterate is

            Ans - 1:2

    5. The no. of literate workers with atleast 3 children is

            Ans : 45

    6. The no. of illiterate workers with less than 4 children is

            Ans : 60

    7. The rate of literate to illiterate workers who have 3 children is

            Ans - 3:4

    II) Which of the following statement(s) is(are) not true


    a. Literate workers have small families than illiterate workers.

    b. Families with 2 or less than 2 children are commoner than families

    with 3 or more     children.

    c. 2 children families constitute 60% of the families of workers.

    d. More the no. of children a worker has the more illiterate he is.

    e. None the above statement is true.

            Ans : e

    III) ---- of a mutual instrument vibrate 6,8 & 12 intervals

    respectively. If all three vibrate together what is the time

    interval before all vibrate together again?

            LCM of NR

            ---------     Ans : 1/2 sec

            HCF of DR 

    12) Certain no. of men can finish a piece of work in 10 days. If

    however there were 10 men     less  it will take 10 days more for the

    work to be finished. How many men were there     originally.

            Ans : 110 men

    10) In simple interest what sum amounts of Rs.1120/- in 4 years and

    Rs.1200/- in 5 years.

            Ans : Rs.800/-

    vi) Sum of money at compound interest amounts of thrice itself in 3

    years. In how many years

        will it take 9 times itself.

            Ans : 6

    vii) Two trains in the same direction at 50 & 32 kmph respectively. A

    man in the slower      train observes the 15 seconds elapse before the

    faster train completely passes him.

         What is the length of faster train ?

            Ans : 75m

    16) How many mashes are there in a sq. m of wire gauge. Each mesh

    being 8mm long X 5mm       width

            Ans : 25000

    17) x% of y is y% of ?

            Ans : x

    11) The price of sugar increases by 20%, by what % house-wife should

    reduce the consumption of sugar so that expenditure on sugar can be

    same as before

            Ans : 16.66

    ? ) A man spending half of his salary for house hold expenses, 1/4th

    for rent, 1/5th for travel expenses, a man deposits the rest in a

    bank. If his monthly deposits in the bank amount 50. What is his

    monthly salary ?

            Ans : 1000

    ? ) The population of a city increases @ 4% p.a. That is an additioanl

    annual increase of 4% of the population due to this influx of job

    seekers, the % increase in population after 2 years is

            Ans :

    ? ) The ratio of no. of boys & girls in a school is 3:2 Out of these

    ?% the boys & 25% of girls  are scholarship holders. % of students who

    are not scholarship holders.?

            Ans :

    ? ) 15 Men take 21 days of 8 hrs. each to do a piece of work. How many

    days of 6 hrs. each would do if 21 women take. If 3 women do as much

    work of 2 men.

            Ans : 30

    ?)   a cylinder ingot 6cms in diameter and 6 cms in height is  and

    spheres all of the same

            size are made from the material obtained.what is the diameter of each


            Ans :3cms

    5)      rectangular plank of sqrt(2)meters wide can be placed so that it is

     on either side of the diagonal of a square shown below.what is the

    area of the plank?

                    Ans :7sqrt(2)

                    fig no-

    7) the difference b/w the compound interest payble  half yearly and

    the simple interest on a

            certain sum cont out at 10% p.a for 1 year is Rs 25 what is the sum


    8) what is the smallest n0 by which 2880 must be divided in order to

    make it a

            perfect square ?

            Ans : c

            a)3 b)4 c)5 d) 6 e)8

    9)a father is 30 times more than his son however he will be only

    thrice as old as the son

            what is father's present age ?

            Ans : 40

    10) An article sold at a profit of 20% if both the c.p & s.p were to

    be Rs.20/- the profit would be 10% more. What is the c.p of that


            Ans : 1% loss

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