Reasoning PYQs

An uncertain number of people are sitting in a row facing north and are at an equal distance between them.

1. Only one person is sitting between D and I, who is sitting fourth from the left end.

Here, we get two possible cases.

                      

2. G is sitting third to the right of D, who is sitting immediate right of A.

3. Two people are sitting between G and F.

                                            

4. The number of people sitting between I and F is the same number of people sitting between F and B.

5. C is sitting exactly between F and B, who is sitting immediate left of H.

6. The number of people sitting to the left of A is the same as to the right of H.

In case I: No one sits to the left of A so, a one sits to the right of H.

In case II: Four people sitting to the right of  A so, four people are sitting to the left of H.

7. H is sitting four places away from E, who is not an immediate neighbour of C.

Case I is eliminated because no one sits to the right of H and E is an immediate neighbour of C.

In case II: E sits fourth to the right of H.

Final arrangement:

I is sitting fifth to the left of G.

The correct answer is 'B'.

An uncertain number of people are sitting in a row facing north and are at an equal distance between them.

1. Only one person is sitting between D and I, who is sitting fourth from the left end.

Here, we get two possible cases.

                      

2. G is sitting third to the right of D, who is sitting immediate right of A.

3. Two people are sitting between G and F.

                                            

4. The number of people sitting between I and F is the same number of people sitting between F and B.

5. C is sitting exactly between F and B, who is sitting immediate left of H.

6. The number of people sitting to the left of A is the same as to the right of H.

In case I: No one sits to the left of A so, a one sits to the right of H.

In case II: Four people sitting to the right of  A so, four people are sitting to the left of H.

7. H is sitting four places away from E, who is not an immediate neighbour of C.

Case I is eliminated because no one sits to the right of H and E is an immediate neighbour of C.

In case II: E sits fourth to the right of H.

Final arrangement:

'E' is sitting at the extreme end.

The correct answer is person 'E'.

An uncertain number of people are sitting in a row facing north and are at an equal distance between them.

1. Only one person is sitting between D and I, who is sitting fourth from the left end.

Here, we get two possible cases.

                      

2. G is sitting third to the right of D, who is sitting immediate right of A.

3. Two people are sitting between G and F.

                                            

4. The number of people sitting between I and F is the same number of people sitting between F and B.

5. C is sitting exactly between F and B, who is sitting immediate left of H.

6. The number of people sitting to the left of A is the same as to the right of H.

In case I: No one sits to the left of A so, a one sits to the right of H.

In case II: Four people sitting to the right of  A so, four people are sitting to the left of H.

7. H is sitting four places away from E, who is not an immediate neighbour of C.

Case I is eliminated because no one sits to the right of H and E is an immediate neighbour of C.

In case II: E sits fourth to the right of H.

Final arrangement:

'25' number of people sitting in a row.

The correct answer is 'A'.

An uncertain number of people are sitting in a row facing north and are at an equal distance between them.

1. Only one person is sitting between D and I, who is sitting fourth from the left end.

Here, we get two possible cases.

                      

2. G is sitting third to the right of D, who is sitting immediate right of A.

3. Two people are sitting between G and F.

                                            

4. The number of people sitting between I and F is the same number of people sitting between F and B.

5. C is sitting exactly between F and B, who is sitting immediate left of H.

6. The number of people sitting to the left of A is the same as to the right of H.

In case I: No one sits to the left of A so, a one sits to the right of H.

In case II: Four people sitting to the right of  A so, four people are sitting to the left of H.

7. H is sitting four places away from E, who is not an immediate neighbour of C.

Case I is eliminated because no one sits to the right of H and E is an immediate neighbour of C.

In case II: E sits fourth to the right of H.

Final arrangement:

F is sitting six places away from D and 'G' is sitting third to the left of F.

The correct answer is 'D'.

An uncertain number of people are sitting in a row facing north and are at an equal distance between them.

1. Only one person is sitting between D and I, who is sitting fourth from the left end.

Here, we get two possible cases.

                      

2. G is sitting third to the right of D, who is sitting immediate right of A.

3. Two people are sitting between G and F.

                                            

4. The number of people sitting between I and F is the same number of people sitting between F and B.

5. C is sitting exactly between F and B, who is sitting immediate left of H.

6. The number of people sitting to the left of A is the same as to the right of H.

In case I: No one sits to the left of A so, a one sits to the right of H.

In case II: Four people sitting to the right of  A so, four people are sitting to the left of H.

7. H is sitting four places away from E, who is not an immediate neighbour of C.

Case I is eliminated because no one sits to the right of H and E is an immediate neighbour of C.

In case II: E sits fourth to the right of H.

Final arrangement:

'15' number of people are sitting between H and A.

The correct answer is 'C'.

The least possible Venn diagram for the given statements is:

Conclusions:

I. Some apples are fruit. → False ( As there is no definite relation between apples and fruit. Therefore this is possible but not definite)

II. Some fruits are bananas. → True (As it is given "Only a few fruits are bananas" therefore some fruits are bananas is true)

Hence, only 2 follows is the correct answer.

The least possible Venn diagram for the given statements is:

Conclusions:

I. All lemons are banana. → False ( No specific information given about lemons and banana, hence, it is possible but not definite.)

II. Some lemons  are not banana. → False ( No specific information given about lemons and banana, hence, it is possible but not definite.)

Both of the above conclusions are following the conditions of 'either -or' pair.

Hence, either I or II follows.

Additional Information

 Conditions of Either-or case:

1. The elements should be the same in both the statements.
2. Both the conclusions should be false individually.
3. One conclusion should be positive and one conclusion should be negative (Complementary pair)

The two complementary pairs are:

1. All + Some not

2. No + Some

Note:

Some + Some not is not  considered under Either -or case.

The least possible Venn diagram based on the given statement is:

Conclusions:

I. Some tree are bird. → False (Nothing specific about tree and bird is given, hence this condition is possible but not definite.)

II. Some pigeon are bird. → False (Nothing specific about pigeon and bird is given, hence this condition is possible but not definite.)

Hence, none follows.

The least possible Venn diagram for the given statements is as follows

Conclusions:

I. Some Copper is Gold → False (As there is no direct relation between copper and gold and some copper is gold is possible but not definite. So, it is false)

II. All Bronze is Copper → False (As there is no direct relation between bronze and copper and all bronze is copper is possible but not definite. So, it is false)

Hence, Neither I nor II follows.

1. Bag is purchased immediately before perfume.

2. Only two persons bought between L and the one who purchase perfume.

 

3. Three persons bought between the one who purchase chair and the one who purchase table. (thus, case 1 and case 2 considered as false)

 

4. Only two persons bought between the one who purchase wallet and the one who purchase table.

5. Two persons bought between A and the one who bought Chair.

6. G purchase immediately before K but none of them bought Chair.

7. S does not buy wallet.

Hence, Perfume and Table is the right answer.

1. Bag is purchased immediately before perfume.

2. Only two persons bought between L and the one who purchase perfume.

 

3. Three persons bought between the one who purchase chair and the one who purchase table. (thus, case 1 and case 2 considered as false)

 

4. Only two persons bought between the one who purchase wallet and the one who purchase table.

5. Two persons bought between A and the one who bought Chair.

6. G purchase immediately before K but none of them bought Chair.

7. S does not buy wallet.

Hence, S is the right answer.

1. Bag is purchased immediately before perfume.

2. Only two persons bought between L and the one who purchase perfume.

 

3. Three persons bought between the one who purchase chair and the one who purchase table. (thus, case 1 and case 2 considered as false)

 

4. Only two persons bought between the one who purchase wallet and the one who purchase table.

5. Two persons bought between A and the one who bought Chair.

6. G purchase immediately before K but none of them bought Chair.

7. S does not buy wallet.

 

Hence, A purchase perfume is the correct answer.

1. Bag is purchased immediately before perfume.

2. Only two persons bought between L and the one who purchase perfume.

 

3. Three persons bought between the one who purchase chair and the one who purchase table. (thus, case 1 and case 2 considered as false)

 

4. Only two persons bought between the one who purchase wallet and the one who purchase table.

5. Two persons bought between A and the one who bought Chair.

6. G purchase immediately before K but none of them bought Chair.

7. S does not buy wallet.

 

Thus, A bought item between S and K.

1. Bag is purchased immediately before perfume.

2. Only two persons bought between L and the one who purchase perfume.

 

3. Three persons bought between the one who purchase chair and the one who purchase table. (thus, case 1 and case 2 considered as false)

 

4. Only two persons bought between the one who purchase wallet and the one who purchase table.

5. Two persons bought between A and the one who bought Chair.

6. G purchase immediately before K but none of them bought Chair.

7. S does not buy wallet.

 

Thus, S purchase table.

**Given

Statements:

** T < P ≤ U; L > U ≤ R = O ≥ Y = S

On combining: T < P ≤ U ≤ R = O ≥ Y = S; L > U

Conclusions:

I. R ≥ S → True (as  R = O ≥ Y = S → R ≥ S)

II. T < R → True (as  T < P ≤ U ≤ R)

Hence, Both I and II is true

**Given

Statements:

** H ≥ X < R = O > T;  Y = F ≥ R > D 

On combining: H ≥ X < R ≤ F = Y;  H ≥ X < R = O > T; Y = F ≥ R > D

Conclusions:

I. H ≥ Y → False (as H ≥ X < R ≤ F = Y, thus clear relation cannot be determined)

II. Y > H → False (as H ≥ X < R ≤ F = Y, thus clear relation cannot be determined)

Therefore, Conclusion I and Conclusion II forms complementary pair

Hence, Either I or II is true

Key Points

Conditions for Either - or

I. Subject and predicate should be same

II. Both the conclusions must be false

III. Both the subject should have all the three possibilities i.e. >, <, =

There can be only three possibilities between two subjects

• A > B
• A < B
• A = B

**Given

Statements:

** A < C ≤ F; U = P ≥ R = O = T ≥ F

On combining: A < C ≤ F ≤ T = O = R ≤ P = U

Conclusions:

I. P > C → False (as C ≤ F ≤ T = O = R ≤ P, clear relation between P and C cannot be determined as either P > C or P = C)

II. C = P → False (as C ≤ F ≤ T = O = R ≤ P)

Hence, Either I or Ii is true

**Given

Statements:

** C = D ≤ A < G ≤ K > L ≥ E = H

Conclusions:

I. K > H → True (as K > L ≥ E and E = H → K > H)

II. D ≤ K → False (as D ≤ A and G ≤ K but A < G and not A ≤ G → D < K and not D ≤ K)

Hence, Only I is True.

**Given

Statements:

** G < K > A > S ≤ B ≤ N; K = Q; S = R

On combining: G < K = Q > A > S = R ≤ B ≤ N

Conclusions:

I. Q > S → True (as K = Q > A > S → Q > S)

II. R ≤ N → True (as S = R ≤ B ≤ N → R ≤ N)

Hence, both I and II are True.

Word: MYTHOLOGICAL

 

Word formed after interchanging: (left end) LACIGOLOHTYM (right end)

Clearly, ‘O’ is 8^th from the left end of the new word.