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## Infosys Aptitude - Puzzle Placement Paper 24 Sep 2006 st. francis degree college hydrabad

INFOSYS SAMPLE PAPER ON 24th SEPTEMBER 2006 AT hydrabad

1.A person provide a book for binding, but the binder cuts the book in such a way that he cuts away the numbers on the pages. So now the person sits down to write the page numbers. What he observes is that the book had 61 times 3â€™s. How many pages does the book contain?

Ans) ranging from one to 100 :- 3,13,23,  (30,31,32,33,34,35,36,37,38,39 ) ,43,53,63,73,83,93

The n0 three apears 20 times

Similarly ranging from 101 and 200:-20 times

And  201 and 299 :- 20 times

Total 60 times and 61st three comes in 300

Therefore there are 300 pages

2.Jarius and Kylar are playing the game. If Jarius wins, then he wins twice as many games as Kylar. If Jarius loses, then Kylar wins as the identical number of games that Jarius wins. How many do Jarius and Kylar play before this match?

Ans ) let no  of match played by the 2 (j and k)before the current match be  x and y resp

If j wins :-  x + one =2y

If  k wins :- y + one =x

Solving  for 2 variables in 2 eqn  ans = x = three and y = two

3.Two trains travel from NewYork to Washington and the travel takes five hours journey time. Trains leave from Washington for every hour and an half hour and the trains leave from NewYork every hour. If the train leaves from new york , Then how many trains from washington cross this train on its way?

Let us concider the time of  departure of 1st train be five 0 clock

So it will meet the subsequent trains from opp direction

5        0 clock to 10           o clock

5:30        â€œ           10:30         â€œ

6.00         â€œ            11.00         â€œ

6.30 â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦

7.00â€¦â€¦â€¦â€¦â€¦â€¦â€¦.

7.30â€¦â€¦â€¦â€¦â€¦â€¦â€¦..

8.00â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦

8.30â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦

9.00â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦.

9.30â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦

10.00 will not be considered because the train begins after the train from NY reaches W

â€¦â€¦0.00 â€¦â€¦â€¦..      to 5.00 (will not be considered because the train begins arfter the train from Washington reaches NY)

â€¦â€¦0.30 â€¦â€¦â€¦â€¦..  to 5.30

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦..  6.00

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦.       6.30

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦.    7.00

â€¦â€¦â€¦â€¦â€¦â€¦â€¦..           7.30

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦..    8.00

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦..        8.30

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦  9.00

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦          9.30

So it makes a total of 19 trains.

4.A man travels a merry go round .He says 1/3rd of the children are before me and 3/4th of the children behind me. How many of them are there?

Ans) [(X â€“ 1) / 3] + [3(X - 1) / 4] = X

Solve the above formula and will get X = 13.

5. An artist has exactly 7 paintings ---, T, U, V, W, X, Y, and Z -- from which she must select exactly 5 to be in an exhibit. Any combination is acceptable given it meets the subsequent conditions:

1)  If T is chosen, X cannot be chosen

2)  If U is chosen, Y must also be chosen

3)  If V is chosen, X must also be chosen

1) Which 1 of the subsequent is an acceptable combination of paintings for inclusion in the exhibit?

A. T, U, V, X, Y

B. T, U, V, Y, Z

C. T, W, X, Y, Z

D. U, V, W, Y, Z

E. U, V, W, X, Y

2) If painting T is chosen to be among the paintings included in the exhibit which 1 of the subsequent cannot be chosen to be among the paintings included in the exhibit?

A. U

B. V

C. W

D. Y

E. Z

3) Which 1 of the subsequent substitutions can the artist always make without violating restrictions affecting the combination of paintings provided that the painting mentioned 1st was not, and the painting mentioned 1st was not, and the painting mentioned 2nd was, originally going to be chosen ?

A. T replaces V

B. U replaces Y

C. V replaces X

D. W replaces Y

E. Z replaces W

4) If the artist selects painting V to be included among the paintings in the exhibit, which 1 of the subsequent must be actual of that combination of paintings?

A. T is not chosen

B. Y is not chosen

C. U is chosen

D. W is chosen

E. Z is chosen

Ans: one --- E; two --- B; three --- E; four --- A. (Please mention the reason)

Show the truth table example FOR THE 1st ANS

-------------------------------------------

choices

VIOLATED CONDITIONS

A
1)  If T is chosen, X cannot be chosen

B

3)  If V is chosen, X must also be chosen

C

1)  If T is chosen, X cannot be chosen

D

3)  If V is chosen, X must also be chosen

E

ans

7) Clark, Jones, Mason and Smith are four people. Their professions are druggist, butcher, policeman, and grocer not in the identical order as their names. obtain their respective professions?

1) Clark and Jones are neighbours and they drive every other to work.

2) Jones earns more than mason.

3) Policeman earns more than druggist and grocer.

4) Policeman does not have druggist as a neighbour.

5) Butcher goes to his work by walk.

6) Policeman does not meet the grocer until he arrests him for exceeding the speed limit.

7) Clark beats Smith every time at bowling.  (8 marks)

Ans) repeated ques.

Jones => Grocer

Clark => Druggist

Smith => Policeman

Mason => Butcher.

8. A person observes that his minuteâ€™s hand hours hand coincide every 65 min. Does the watch gain or lose time? If so, how much?

Ans) direct ques. from shakuntala devi

9. A women asks the man about weathers. What is the temperature for last 5 days? She says â€œI don remember the exact temperature, but the temperatureâ€™s product was 12 and they all are various. obtain the temperature.

The ans is :-  -2 , -1 , 0 , one , two

But u can come up with other ans such as

0, 1.5  , two , 0.5 , six

10) this was also a repeated ques. . captain lofar and his 4 friens had a competition and something like that

â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦.

Preparation :-

1)      shakuntala devi (puzzles and more puzzles)

2)      summers

3)      ren and martin for English

4)      amnd a lot of previous ques. papers