Questions Of Reasoning And Puzzles For Competitive Examinations


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Questions Of Reasoning And Puzzles For Competitive Examinations

  1. 1. Questions of Reasoning and Puzzles for aptitude tests by : DR. T.K. JAIN AFTERSCHO ☺ OL centre for social entrepreneurship sivakamu veterinary hospital road bikaner 334001 rajasthan, india FOR – CSE & PGPSE STUDENTS (CSE & PGPSE are free online programmes open for all, free for all) mobile : 91+9414430763
  2. 2. My word..... My purpose here is to give a few questions, which are often asked in aptitude tests and competitive examinations. Please prepare well for your examinations. Please pass this presentation to all those who might need it. Let us spread knowledge as widely as possible. I welcome your suggestions. I also request you to help me in spreading social entrepreneurship across the globe – for which I need support of you people – not of any VIP. With your help, I can spread the ideas – for which we stand....
  3. 3. Solve the following puzzle : There are six cities A,B,C,D,E and F A is not a hill station. B and E are not historical places. D is not an industrial city. A and D are not historical cities. A and B are not alike. Assuming that there are 2 cities of each type : hill station, historical city and industrial town, Which two cities seem to be industrial centres?
  4. 4. Solution
  5. 5. solution... Thus only A and E are industrial towns.
  6. 6. Solve the following puzzle Five friends A,B,C,D,E travelled to five different cities of Chennai,Calcutta,Delhi,Bangalore and Hyderabad by five differnet modes of transport of Bus,Train,Aeroplane,Car and Boat from Mumbai. The person who travelled to Delhi did not travel by Boat. C went to Banalore by Car and B went to Calcutta by Aeroplane. D travelled by Boat whereas E travelled by Train. Mumbai is not connected by Bus to Delhi and Chennai.Person travelling to Delhi went by which mode?
  7. 7. SOLUTION...
  9. 9. SOLVE THIS PUZZLE Four youngmen A,B,C,D are friendly with four girls E,M,S and L.E and S are friends.C's girlfriend does not like E and S . M does not care for C.B's girlfriend is friendly with E.E does not like A. Who is A's girlfriend?
  10. 10. SOLUTION ...
  12. 12. SOLVE THIS There are five friends-A,S ,R ,Z and Y .A is shorter than S but taller than Y.R is the tallest. Z is little shorter than S and little taller than A. Who is the shortest? ANSWER : Y<A<Z<S<R thus Y is the shortest. Answer
  13. 13. Solve the following puzzle Among five boys V is taller than M,but not as tall as R,J is taller than D but shorter than M. Who is the tallest in their group? Answer : D<J<M<V<R answer : R is the tallest.
  14. 14. Solve this puzzle S is as much older than K as he is younger than P . N is as old as K .Which of the following is wrong? a)K is younger than P . b)N is younger than P . c)S is older than N . d)P is not the oldest. e)K is younger than S. ANSWER : N=K < S < P SO d IS WRONG
  15. 15. SOLVE THIS PUZZLE From amongst five doctors A,B,C,D and E;four engineers G,H,K and L; six teachers M,N,O,P,Q and R some teams are to be selected.A,B,G,H,O,P and Q are females and the rest are males. Where ever there is a male doctor ,no female teacher. Where ever there is a male engineer, no female doctor. There shall not be more than two male teachers in any team. If the team consists of 3 doctors,2 male engineers and 2 teachers, the members of the team could be: a)A B C K L M R b)B C D K L N R c)C D E K L M N d)C D E K L P R
  16. 16. SOLUTION It is given in question, that we have to take only male engineers. Thus we will be able to take only male doctors. If we take only male doctors, we shall be able to take only male teachers. Thus C is the only option possible (all males). Answer
  17. 17. Solve this puzzle There is a group of six persons A,B,C,D,E and F from a family. They are programmer,manager,lawyer,jeweler,doctor and engineer. The doctor is the grandfather of F who is a programmer. The manager D is married to A. C,the jeweler is married to the lawyer. B is the mother of F and E. There are two married couples in the family. What is the profession of E?
  18. 18. solution...
  19. 19. SOLUTION It is clear that the two couples are CB and AD. Thus the profession of A is doctor. Thus only profession left after all these is engineer. Thus profession of E is engineer. Answer
  20. 20. Solve this puzzle In a family of six persons,there are three generations.Each person has seperate profession and also they like different colours.There are two couples in the family.R is a CA and his wife neither is a doctor nor likes green colour. Engineer likes red colour and his wife is a teacher.M is mother-in-law of S and she likes orange colour. V is grandfather of T ,who is principal likes black colour.z is granddaughter of M and she likes blue colour. Z's mother likes white colour. Who is an Engineer?
  21. 21. Solution ....
  22. 22. Solution Thus from the table, it is clear that V is engineer
  23. 23. 14 students in a class failed in both QT and Accounts. 20 failed in QT, but 32 failed in Accounts. How many students were there in total ? 20+32 – 14 = 38 students. Answer
  24. 24. Solve the following : All tables are chairs All chairs are almirahs Some almirahs are pens All pens are bikes. Which conclusion can be drawn : 1. all almirahs are tables 2. some bikes are not pens 3.. Some tables are pens 4. some almirahs are bikes..
  25. 25. solution.... You cant be sure that 1 st or 2 nd or 3 rd conclusion is right. There is a possibility that this conclusion is not valid. Thus only 4 th conclusion is a valid conclusion – it is bound to be there. Answer
  26. 26. Solve the following question Statements : 1. some tables are fans 2. some fans are balls 3. Some balls are bats. Which conclusion can be drawn : 1. No table is ball 2. some bats are fans 3. some tables are not bats 4. some bats are tables. SOLUTION : NO CONCLUSION CAN BE DRAWN.
  27. 27. V is 2 years older to T. T is 4 years younger to H. H is of the same age as N. N is 1 year younger to M. What is the age of M, if their total age is 100 years? T seems to be youngest, so let us start with T. V=T+2, H = T+4, N = T+4, M=T+5 Now let us add their age : T+T+2+T+4+T+4+T+5 = 100 5T+15=100, or 5T=85 or T=17 the age of M = 17+5 = 22 answer
  28. 28. Statement v/s argument... Statement : Banks should be privatised. Argument 1 : Yes, they should be privatised, because other countries have also privatised banks. Argument 2: No – they should not be privatised, because government has lots of deposits in Banks. ANSWER : NO ARGUMENT IS STRONG ENOUGH.
  29. 29. Statement v/s argument Statement : Banks should be privatised. Argument 1 : Yes, they should be privatised, because only private sector can be efficient Argument 2: No – they should not be privatised, because they generate employment ANSWER : NO ARGUMENT IS STRONG ENOUGH. IN THE FIRST ARGUMENT THE WORD ONLY CREATES PROBLEMS. IN 2ND ARGUMENT, IT IS NOT CLEAR, WHY EMPLOYMENT IS A PRIORITY FOR BANKS.
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  35. 35. There are five friends Lalu, Kalu, Monu, Anuj and raju. Lalu ia shorter than Kalu but taller than raju. Monu is tallest. Anuj is a little shorter than Kalu and a little taller than Lalu. Who is the shortest? R< L <A< K <M answer : Raju
  36. 36. (1)There is a group of five girls. (2)Lata is second in height but younger than Rupa. (3)Pooja is taller than Mem but younger in age. (4)Rupa and Mem are of the same age but Rupa is tallest between them. (5)Niru is taller than Puja and elder to Rupa. Arrange them in age and height AGE : N R M P/ L HEIGHT R L N P M
  37. 37. X knows more than A. Y knows as much as B. Z knows less than C. A nows more than Y. The best knowledge person amongst all is: X>A > Y=B C>Z we are not able to know who knows more Z or A. Thus answer cant be drawn.
  38. 38. Solve the following : Five children were administrated psychological tests to know their intellectual levels. In the report, psychologists pointed out that the child A is less intelligent than the child B. The child C is less intelligent than the child D. The child B is less intelligent than the child C and child A is more intelligent than child E. Which child is most intelligent? D>C>B>A>E thus D is the most intelligent
  39. 39. Solve the following : In an examination, Raj got more marks than Goti but not as many as Neha.Neha got more marks than Jitu and Kamal. Jitu got less marks than Goti but his marks are not the lowest in the group. Who is the second in the descending order of marks? N>R>G>J>K answer = Raj
  40. 40. Solve the following : (A)Gop is shorter than Nanu but taller than Kalu. (B)Lalu is shorter than Kalu. (C)Jitu is taller than Lalu. (D)Nanu is taller than Jitu . Who among them is the tallest? N>G>K / J>L so Nanu is the tallest.
  41. 41. Solve it ?? There are seven students P, Q, R, S, T, U and V (1) they take a series of tests (2)No two students get similar marks. (3)V always scores more than P. (4)P always scores more than Q. (5)Each time either R scores the highest and t gets the least or alternatively S scores the highest and U or Q scores the least. If S is ranked sixth and Q is ranked fifth,solve the questions on next slide ??
  42. 42. Which of these is possible ? a) V is ranked first or fourth (b) R is ranked second or third (c)Pis ranked second or fifth (d) U is ranked third or fourth (e) T is ranked fourth or fifth. Possible solutions : 1 2 3 4 5 6 7 R V P Q S T thus only U can be at 3 rd or 4 th rank. No other options is possible
  43. 43. Who is the oldest ? (1)A, B, C, D and E are five friends. (2)B is elder to E, but not as tall as C. (3)C is younger to A, and is taller to D and E. (4)A is taller to D, But younger to E. (5)D is elder to A but is shorter in the group. B / D>E / D > A>C the oldest can be either B or D.
  44. 44. QUESTIONS... A * B means A and B are the same age. A – B means B is younger than A. A + B means A is younger than B. SOLVE IT : A * b – c means (a) c is youngest (b) c is the oldest (c) b is younger than c (d)None of these ANSWER : c is youngest.
  45. 45. Solve the following Six persons A,B,C,D,E and F are sitting in two rows, three in each. E is not at the end of any row Dis second to the left of F. C the neighbour of E, is sitting diagonally opposite to D. B is the neighbour of F. Who are sitting diagonally opposite? A E C D B F ans : AF and DC are sitting diagonally opposite
  46. 46. Solve it ..... Eight books are kept one over the other counting from the top the second, fifth and sixth books are on plays. Two books on plays are between two books on composition. One book of plays is between two books on poetry. While the book at the top of the book of literature is a book of composition .Which book is fourth from the top? 1 2 3 4 5 6 7 8 P p P C p p C L Thus 4 th book is COMPOSITION.
  47. 47. SOLVE IT ... Four boys are sitting on a bench to be photographed. A is to the left of B. D is to the right of B. C is between B and D. Who would be second from the left in the photograph? A B C D ANS : C In the photo, A will be extreme right and D will be extreme left.
  48. 48. Solve it .... There are five different houses, A to E in a row. A is to the right of B and E is to the left of C and right of A. B is to the right of D. Which of the houses is in the middle? ANSWER : D B A E C THUS A IS IN THE MIDDLE.
  49. 49. SOLVE IT ... In a march past , seven persons are standing in a row. Q is standing left to R but right to P. O is standing right to N and left to P. Similarly , S is standing right to R and left to T. Find out who is standing in middle? ANS : N O P Q R S T the person in MIDDLE Is Q
  50. 50. Solve it ... Five children are sitting in a row. S is sitting next to P but not T who is sitting next to R who is sitting on extreme left and T is not sitting next to K. Who are sitting adjacent to S? Answer : RTPSK answer : P and K are adjacent to S.
  51. 51. Solve it Five Boys are sitting in a row, A is not adjacent to B or C.D is not adjacent to B. A is adjacent to E. E is at the middle in the row. Then, D is adjacent to whom ? DAECB or BCEAD ANSWER : A
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  54. 54. Up to the time the last vote was recorded, it was difficult to decide whether victory lay with the ruling party or the opposition Instead of lay, use lied remember the formats of lie and lay Lay : lay, laid laid lie : lie lay lain lay = to put lie = to rest here we will use lie as an infinitive not as verb
  55. 55. We should always side with those who is true and unselfish and work for others We should always side with those who are true and unselfish and work for others
  56. 56. Before giving the mixture to the child shake it thouroughly. Here it has been used for mixture, but it is coming just after child, thus it seems that child has to be shaked. So correct it : Before giving to the child the mixture, shake it thouroughly.
  57. 57. The short story should not exceed more than two hundred words. Dont use more than exceeds itself means more than, so there is no need of more than or instead of exceed use be of
  58. 58. He looks at everything from their best side. Instead of their, use its everything is singular so use its instead of their.
  59. 59. Page after Page of Gita were read and it gave great consolation to his mind. Instead of were, use was. Page is singular so use was instead of were.
  60. 60. His manners indicate that he has no other intention than to steal his money. Instead of than, use but
  61. 61. I will now deal with him in a manner different from the one I have adopted so far. Instead of I have adopted so far, use : I have been adopting so far (to show continuation).
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