Tuesday 6 August 2013

Elitmus Questions With Solutions: Aptitude-1

1. Find the number of ways in which you can fill a 3x3 grid(with four courners defined as a,b,c,d) if u have 3 white marbles and 6 black marbles.





2. If X=123456 and Z=X-Y then for how many values of Y, Z is divisible by 48, 98, 105?





3. There are 6 Bangles each of 4cms in diameter. These are to be placed in a salver(plate), what should be the minimum radius of the salver, so that each bangles are kept without overlapping (bangles touching each other)?





4. Let Sn denote the sum of first n terms of an A.P. If S2n = 3Sn, then the ratio S3n/Sn is equal to?





5. In a strange twist of hearts, P politicians of a country agreed to an average donation of Rs. D each. Q of these politicians, who had pledged an average of Rs. A never donated the pledged money. Which of the following expressions represents the percent of the pledged money that was actually donated.

a)100(QA/PD)
b)100(PD/QA)
c)100-100(QA/PD)
d)100PD-100(QA/PD)







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19 comments:

  1. I wish I had found this site before I took the test. What will be the answer of this question,

    Two persons A and B do a work in 30 and 40 days respectively.If both do together,A start the first day and on
    other day work done by exactly one of them.Finally they divide the earning in ratio 1:1.How many days the work be completed?

    ReplyDelete
    Replies
    1. Hello Deepak,
      Thanks for your invaluable contribution to this site. Much Appreciated. We will make a post of the questions and post soon.
      This will be solved in part 8 of this series...

      Delete
  2. Thanks to this blog for guiding me, I scored 92 percentile, but my verbal was not good though..
    I remember two questions, it might help some people who want to attend this test,

    1. Two circles lying in the first quadrant, touch each other externally. Both the axes makes tangents with both the circles. If the distance between the two centre of the circles is 8 cm, find the difference in their radii?

    2. Two circles intersect each other @ two points P and Q ...smaller circle has radius 1cm...if arc extended by smaller circle is 90 degree and that of the larger circle in 60 degree at their corresponding centres .Find out the common area of the circles???

    There was one more question on geometry. However I'm not recalling that.

    Thanks again!

    ReplyDelete
    Replies
    1. We are glad to help you, and thanks to you for getting back and contributing for this site. Much Appreciated :)
      We will make a post of the questions and post soon.
      These will be solved in part 8 of this series...

      Delete
  3. Hi,
    Thanks for these questions, there wer about two to three questions repeated! I got them right :)
    here's my bit for your site, the below questions were asked when i took the test

    1. There is a circular table and 60 people can sit in that. If there are N number of people sitting and a monster comes and want to occupy a seat such that he has someone on his side. Then what is the minimum value of N. options are 15 20 29 30 i think

    2. How many 3 digits numbers are there in which if there is a 3 and it is followed by a 7?

    3. how many numbers are there between 1100 - 1300 which are divisible by and that all 4-digits of number should be odd(ex:1331)

    Hope this helps :)

    ReplyDelete
    Replies
    1. Thanks for those questions, we are glad we helped you :)
      These questions will be solved in the 10th post of this series.

      Delete
  4. hii..
    for the ques 1.. if we place the black marbel first then it can be placed like 9c6 and then 3c3.. so the whole combinaton can be..
    9c6*3c3 + 9c3*6c6..

    ReplyDelete
    Replies
    1. well, not really. If you didn't get that, this might help you. Consider those 9 marbles as 9 alphabets. Now there are 9 alphabets and we have to find the number of different words that can be formed using them. So the number of different words would be, 9!/(3!*6!).....3! for white and 6! for 6 black marbles..
      Hope I cleared your doubt!

      Delete
  5. Glad you found it useful :)

    ReplyDelete
  6. don't you think the answer of question 3 is incorrect ?

    ReplyDelete
  7. ah well.....what do you think is the right answer?

    ReplyDelete
  8. if you are putting 1 bangle in center and 5 around that bangle so, diameter should be diameter of center bangle and diameter of two other bangle total 12 cm not cm .... correct me if i am wrong ?

    ReplyDelete
  9. ya diameter will be 12cm...The radius will be 6cm

    ReplyDelete
  10. can u explain ques-3?whats the logic behind it..

    ReplyDelete
  11. Hi, My ph score Quant - 98.62 %, PS - 79.89 %, Verbal - 34.26 % what should i do i'm thinking of writing again !! waht are my chances ?

    ReplyDelete
  12. & your blog contributed 20 marks to my ph score thanks a lot Glued brain :D the low score in verbal was i spent almost 45min in PS which was very difficult !! only had 20 mins which went haywired i think :/

    ReplyDelete
  13. & your blog contributed 20 marks to my ph score thanks a lot Glued
    brain :D the low score in verbal was due to i spent almost 45min in PS which
    was very difficult !! only had 20 mins which went haywired i think :/

    ReplyDelete