Logical Reasoning -Solved Problems

 Logical Reasoning skills 

Logical Reasoning -Solved Problems 


1. Arrange the given words in a meaningful sequence.

1. Sentence, 2. Chapter, 3. Word, 4. Paragraph, 5. Book


A. 2, 3, 1, 5, 4.

B. 3, 2, 5, 4, 1.

C. 5, 2, 4, 1, 3.

D. 5, 3, 2, 4, 1.


Answer: C. 5, 2, 4, 1, 3.


Explanation:

The correct order is:

Book (5) - Chapter (2) - Paragraph (4) - Sentence (1) - Word (3).


2. In a row of 54 persons, A is 35th from the left side of the row and B is 22nd from the right side of the row. Find the no. of persons sitting between A and B?


A. 1

B. 2

C. 3

D. 4


Answer: A. 1


Explanation: 

Here Sum of positions of A & B from opposite ends = 35 + 22 = 57 > Total no. of persons

∴ No. of persons between A & B = (Position of A from left + Position of B from right) - Total no. of students - 2

No. of persons between A & B = (35+22) - 54 - 2 

= 57 - 54 - 2

= 1.


3. Choose the pair in which the words are differently related.


A. Cow : Fodder

B. Crow : Carrion

C. Poultry : Farm

D. Vulture : Prey


Answer: C. Poultry : Farm


Explanation:

In all other pairs, second is the food over which the first feeds.



4. Find the missing number: 15, 225, 16, 256, 17, ?

A. 287

B. 288

C. 290

D. 289

Answer: D. 289


Explanation:

The numbers in the sequence alternate between the increasing consecutive integers beginning with 15 and the squares of these integers.

i.e. 152 = 225

162 = 256

172 = 289.


Choose the correct alternative from the following:

Assertion (A) : An iron ball floats on mercury but gets immersed in water.

Reason (R) : The specific gravity of iron is more than that of mercury.


A. Both A and R are true and R is the correct explanation of A.

B. Both A and R are true but R is NOT the correct explanation of A.

C. A is true but R is false.

D. A is false but R is true.


Answer: C . A is true but R is false.


Explanation:

Iron with specific gravity less than that of mercury but more than that of water, floats in the former but gets immersed in the second.


6. Pointing to a photograph, a man said, "I have no brother or sister but that man's father is my father's son".Whose Photograph was it?


A. His own

B. His son's

C. His father's

D. His nephews


Answer: B. His son's


Explanation:

Since the narrator has no brother, his father's son is he himself.

So, the man who is talking is the father of the man in the photograph or the man in the photograph is his son.


7. If 2 + 3 = 10

8 + 4 = 96

7 + 2 = 63

6 +5 = 66

then 9 + 5 = ?


A. 99

B. 89

C. 116

D. 126


Answer: D. 126


Explanation:

Add the given number and multiply the first number

2 + 3 = 5 * 2 = 10

8 + 4 = 12 * 8 = 96

7 + 2 = 9 * 7 = 63

6 + 5 = 11 * 6 = 66

9 + 5 = 14 * 9 = 126.


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