Reasoning PYQs

Given statement,

H ≤ A > N = Y < S = D

Conclusions:

I. D > A → False (As we can see that A > N = Y < S = D, here the relation between D and A cannot be determined. So, D > A is false)

II. A > S → False (As we can see that A > N = Y < S, here the relation between A and S cannot be determined. So, A > S is false)

Hence, neither I nor II follows.

Given statement,

C ≥ Z ≥ H = P > G > W

Conclusions:

I. W < C → True (As we can see that C ≥ Z ≥ H = P > G > W, so W < C is true)

II. C ≥ P → True (As we can see that C ≥ Z ≥ H = P, so C ≥ P is true)

Hence, both I and II follow.

Statement:

S > G > K < J = Y > W < U < O

Conclusions:

I. S > W → False (S > G > K < J = Y > W → As direct relationship between S and W cannot be determined).

II. O < Y → False (Y > W < U < O → As direct relationship between O and Y cannot be determined)

Hence, Neither I nor II follows.

Given

Statement:

A < T = Y > R < K < L ≤ M > O

Conclusions:

I. M > R → True (R < K < L ≤ M → R < M)

II. Y > A → True (A < T = Y → Y > A)

Hence, Both Conclusion I and II follows.

Given:

Seven persons - A, B, C, D, E, F, and G - Facing North

1) B sits second from one of the ends.

2. Only two persons are sitting between B and A.

3. The number of persons sitting to the left of A is the same as the right of G.

4) The number of persons sitting between A and G is the same as between E and F.

5) E and G are not immediate neighbours.

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6) C sits to the right of E but is not an immediate neighbour of B. This is not possible in Case II so it gets eliminated.

Thus, the final arrangement is -

D, who sits second to the left of G, sits immediate left of B.

Hence, the correct answer is The one who sits second to the left of G.

Given:

Seven persons - A, B, C, D, E, F, and G - Facing North

1) B sits second from one of the ends.

2. Only two persons are sitting between B and A.

3. The number of persons sitting to the left of A is the same as the right of G.

4) The number of persons sitting between A and G is the same as between E and F.

5) E and G are not immediate neighbours.

​

6) C sits to the right of E but is not an immediate neighbour of B. This is not possible in Case II so it gets eliminated.

Thus, the final arrangement is -

All the persons given in options sit to the left of A.

Hence, the correct answer is All of the above.

Confusion Points

In the question, the person sitting to the left of A is asked and not 'immediate left'.

Given:

Seven persons - A, B, C, D, E, F, and G - Facing North

1) B sits second from one of the ends.

2. Only two persons are sitting between B and A.

3. The number of persons sitting to the left of A is the same as the right of G.

4) The number of persons sitting between A and G is the same as between E and F.

5) E and G are not immediate neighbours.

​

6) C sits to the right of E but is not an immediate neighbour of B. This is not possible in Case II so it gets eliminated.

Thus, the final arrangement is -

One person is between C & A and E & F.

In the similar way, G, who sits third from the left end is related to D.

Hence, the correct answer is The one who sits third from the left end.

Given:

Seven persons - A, B, C, D, E, F, and G - Facing North

1) B sits second from one of the ends.

2. Only two persons are sitting between B and A.

3. The number of persons sitting to the left of A is the same as the right of G.

4) The number of persons sitting between A and G is the same as between E and F.

5) E and G are not immediate neighbours.

​

6) C sits to the right of E but is not an immediate neighbour of B. This is not possible in Case II so it gets eliminated.

Thus, the final arrangement is -

Three persons are sitting between C and G.

Hence, the correct answer is Three.

Given:

Seven persons - A, B, C, D, E, F, and G - Facing North

1) B sits second from one of the ends.

2. Only two persons are sitting between B and A.

3. The number of persons sitting to the left of A is the same as the right of G.

4) The number of persons sitting between A and G is the same as between E and F.

5) E and G are not immediate neighbours.

​

6) C sits to the right of E but is not an immediate neighbour of B. This is not possible in Case II so it gets eliminated.

Thus, the final arrangement is -

F is third to the left of D.

Hence, the correct answer is Third to the right.

Number: 86435192

Ascending order: (left end) 12345689 (right end)

2^nd digit from right: 8; 4^th digit from left: 4

Difference = 8 – 4 = 4.

Hence, the difference between the digits which are second from the right and fourth from the left in the new arrangement is 4.

Given series: 219   462   764   803   129

The lowest number in the series = 129

The highest number in the series = 803

The second digit of the lowest number is 2

The third digit of the highest number is 3

On adding 3 to these digits, we get

2 + 3 = 5

3 + 3 = 6

On adding both the digit, we get

5 + 6 = 11

Hence, the required sum is 11

Given series: 219   462   764   803   129

After arranging the digits in each of the numbering descending order:

921   642   764   830   921

Now,764 is the only number that remains unchanged.

Hence, one is the correct answer.

Given series: 219   462   764   803   129

After the first and the last digits are interchanged, we get the following series:

912   264   467   308   921     

308 is the second-lowest number in the above rearrangement which is obtained from 803.

Hence, 803 is the correct answer.

Note:

Second-lowest number = second number in ascending order.

Given series:219   462   764   803   129

After rearranging the digit in each of the five numbers are arranged in ascending order:

129   246   467   038   129

Sum of middle digits of each of the numbers is

2 + 4 + 6 + 3 + 2 = 17

Hence, the sum of the middle digits of each of the numbers is 17.

Given series: 219   462   764   803   129

The second-highest number in the series = 764

The lowest number in the series = 129

On addition of the second-highest number and lowest number in the series, we get:

129 + 764 = 893

Hence, the required sum is 893.

Note: Second-highest number = the second number after arranging in ascending order.

Given:

Six people – A, B, C, D, E, and F

Flat Alpha is to the West of Flat Beta.

1. D does not live on the same floor as A.

2. F lives below D but not in the same flat as D.

3. F does not live on the bottommost floor.

 

4. C lives below F in the same flat.

5. B does not live on an even-numbered floor.

6. E lives below F.

7. B lives above A, who lives in Flat Alpha.

(Case 1a will not be possible as it will contradict point 7)

Hence, F lives on the second floor of Flat Beta.

Given:

Six people – A, B, C, D, E, and F

Flat Alpha is to the West of Flat Beta.

1. D does not live on the same floor as A.

2. F lives below D but not in the same flat as D.

3. F does not live on the bottommost floor.

 

4. C lives below F in the same flat.

5. B does not live on an even-numbered floor.

6. E lives below F.

7. B lives above A, who lives in Flat Alpha.

(Case 1a will not be possible as it will contradict point 7)

 

The logic followed here is that all the given options are people living on odd numbered floors, except A.

Hence, A is the odd one out.

Given:

Six people – A, B, C, D, E, and F

Flat Alpha is to the West of Flat Beta.

1. D does not live on the same floor as A.

2. F lives below D but not in the same flat as D.

3. F does not live on the bottommost floor.

 

4. C lives below F in the same flat.

5. B does not live on an even-numbered floor.

6. E lives below F.

7. B lives above A, who lives in Flat Alpha.

(Case 1a will not be possible as it will contradict point 7)

Hence, the correct answer is option 3.

Given:

Six people – A, B, C, D, E, and F

Flat Alpha is to the West of Flat Beta.

1. D does not live on the same floor as A.

2. F lives below D but not in the same flat as D.

3. F does not live on the bottommost floor.

 

4. C lives below F in the same flat.

5. B does not live on an even numbered floor.

6. E lives below F.

7. B lives above A, who lives in Flat Alpha.

(Case 1a will not be possible as it will contradict point 7)

 

Hence, all the statements are correct.

Given:

Six people – A, B, C, D, E, and F

Flat Alpha is to the West of Flat Beta.

1. D does not live on the same floor as A.

2. F lives below D but not in the same flat as D.

3. F does not live on the bottommost floor.

 

4. C lives below F in the same flat.

5. B does not live on an even numbered floor.

6. E lives below F.

7. B lives above A, who lives in Flat Alpha.

(Case 1a will not be possible as it will contradict point 7)

After rearrangement:

 

Hence, E lives on the fourth floor after the rearrangement.