Reasoning PYQs

Given:

Total students in the class = 90

Number of girls = 2 × (Number of boys)

Rahul's rank = 20^th from the top.

The number of girls ahead of Rahul is 15.

Find the total number of boys and girls in the class.

Let the number of boys be 'B' and the number of girls be 'G'.

Total students = B + G = 90

Since G = 2B:

B + 2B = 90

3B = 90

B = 30

G = 2 × 30 = 60

So, there are 30 boys and 60 girls in the class.

Find the number of boys ahead of Rahul who is ranked 20^th.

The number of students ahead of Rahul = (Rahul's rank) - 1

= 20 - 1

= 19 students.

Number of boys ahead of Rahul = (Total students ahead) - (Number of girls ahead)

= 19 - 15

= 4 boys.

Finally, find the number of boys behind him:

Number of boys behind him = (Total number of boys) - (Number of boys ahead of him) - 1 (for Rahul himself)

= 30 - 4 - 1

= 26 - 1

= 25 boys.

Hence, the correct answer is "Option 4".

Given:

First, bring the highest number to the leftmost position.

Logic followed here is: Elements are shifting right end to the left in the each next step.

Input: cat 28 dog 43 bat 59

From the above input, it can be written as steps as 

Step 1: 59 cat 28 dog 43 bat

Step 2: 59 bat cat 28 dog 43

Step 3: 59 bat 43 cat 28 dog

Step 4: 59 bat 43 dog cat 28

Final (Step 5): 59 bat 43 dog 28 cat

Thus, 59 bat 43 dog 28 cat is the final step of the input.

Hence, the correct answer is "Option 3".

Given:

A delivery agent starts from his warehouse and drives 8 km North, then 6 km East, and then 3 km South.

He then makes a U-turn, returns 3 km North, continues 4 km further North, and finally takes a left turn and drives 6 km. 

Thus, he is 12 km North from the starting point.

Hence, the correct answer is "Option 2".

The logic followed here is:

Thus, the missing letter in the series is A.

Hence, the correct answer is "Option 2".

The logic followed here is:

Logic: (Sum of the positional values) = Number

TABLE → (20 + 1 + 2 + 12 + 5) = 40

CHAIR → (3 + 8 + 1 + 9 + 18)  = 39 

Similarly,

SOFA → (19 + 15 + 6 + 1) = 41

Hence, the correct answer is "Option 2".

Given:

Statement:

A man sees smoke coming from a building and hears people shouting.

Option 1 — Run away immediately:

Running away may keep the man safe, but it doesn't help people in danger and could delay professional help. Not the best first action.

Option 2 — Try to enter the building:

Entering a smoke-filled building is dangerous and could put the man at risk, too.

Option 3 — Call emergency services:

This is the correct first action.

Calling the fire department/police/ ambulance gets trained responders on the way, allows professionals to coordinate rescue and containment, and can provide instructions (stay back, evacuate nearby, etc.). 

Option 4 — Ignore and move on:

Clearly inappropriate — people may be in danger.

Hence, the correct answer is "Option 3".

Given:

Priya's rank from the left = 9^th

Priya's rank from the right = 14^th

Total persons = (Rank from one end) + (Rank from other end) - 1

Total students = (Priya's rank from left) + (Priya's rank from right) - 1

= 9 + 14 - 1

= 23 - 1

= 22 students.

Hence, the correct answer is "Option 1".

The logic followed here is:

For APPLE to BQOKF:

For GRAPE:

 

Thus, applying the same logic, GRAPE is HSZOF.

Hence, the correct answer is "Option ".

Given:

Statement:

Innovation requires risk-taking, but excessive risks without planning can lead to failure.

Conclusion I: Risk-taking alone does not guarantee innovation.

The statement says that innovation needs risk-taking, but also warns that without planning, it may fail.

So, risk-taking alone is not enough → this conclusion follows. 

Conclusion II: Planning is always necessary for successful innovation.

This does not imply that planning is always necessary. Sometimes moderate, calculated risks may succeed even with limited planning.

This conclusion does not follow.

Thus, Only conclusion I follow.

Hence, the correct answer is "Option 3".

The logic followed here is:

Triangle, Circle and Square are 2-dimensional plane figures.

Cube is a 3-dimensional (has faces, edges and vertices).

Thus, it is the odd one out.

Hence, the correct answer is "Option 3".

The logic followed here is:

 

The numbers 38, 39, and 40 are not perfect squares.

Whereas,

36 is a perfect square.

Hence, the correct answer is "Option 4".

Note: Based on the logic of odd and even numbers, the odd one is 39. However, the official answer key states that the correct answer is 'Option 4'.

Therefore, we will use the logic of a square number instead.

The logic followed here is:

 

Iron, Copper, and Zinc are all metals.

Whereas,

Plastic is a synthetic material and is not a metal.

Hence, the correct answer is "Option 1".

The logic followed here is a consistent alphabetical shift of "+3" for each letter.

For CAT to FDW:

For DOG:

Thus, the code for DOG is GRJ.

Hence, the correct answer is "Option 3".

Input: Craft 71 60 40 Art Skill Brain 83

Step 1 — Find the alphabetically first word:

The words are: Craft, Art, Skill, Brain. The alphabetically first word is Art.

Place Art at the left end, then keep the remaining words in their original relative order immediately after it:

Art Craft Skill Brain.

Step 2 — Find the largest number:

The numbers are: 71, 60, 40, 83. The largest number is 83.

Place 83 at the right end, and keep the remaining numbers in their original relative order immediately before it:

71 60 40 83.

Step 3 — Combine word block (left) and number block (right):

Art Craft Skill Brain 71 60 40 83

Answer — Step I arrangement: Option 4) Art Craft Skill Brain 71 60 40 83

Hence, the correct answer is "Option 4".

The logic followed here is:

Logic: Each digit of the first number is increased by 2 to get the corresponding digit of the second number.

Now,

For, 32654 : 54876

⇒ 3 + 2 = 5

⇒ 2 + 2 = 4

⇒ 6 + 2 = 8

⇒ 5 + 2 = 7

⇒ 4 + 2 = 6

Similarly, for 51763 ∶ ?

⇒ 5 + 2 = 7

⇒ 1 + 2 = 3

⇒ 7 + 2 = 9

⇒ 6 + 2 = 8

⇒ 3 + 2 = 5

The missing number is 73985.

Hence, the correct answer is "Option 4".

The logic followed here is:

Logic: The relationship between the words is of a direct definition.

Here,

Antonym: Opposite → An Antonym is defined as a word that is the "Opposite" in meaning to another word.

Similarly,

Synonym: Similar → A Synonym is defined as a word that has the "Similar" meaning as another word.

Hence, the correct answer is "Option 3".

Note: 

"Same" means that two or more things are identical in every single aspect, while "similar" means they are alike in some ways but not identical.

Given: Eight friends A, B, C, D, E, F, G, and H are sitting around a circular table facing the center.

A is second to the left of D.

B is to the immediate right of A.

C is opposite B.

H is not an immediate neighbor of D.

G is to the immediate right of H.

F is between C and D.

Possible seating arrangement is,

So, C is sitting to the immediate left of H.

Hence, the correct answer is "Option 2".

The logic followed here is:

 

Mercury, Venus, and Earth are all classified as planets in our solar system.

Whereas,

Pluto is classified as a dwarf planet.

Hence, the correct answer is "Option 4".

The logic followed here is a consistent alphabetical shift of +4 for each letter.

For BCD to FGH:

For JKL:

Thus, the code for JKL is NOP.

Hence, the correct answer is "Option 4".

The logic followed here is:

Thus, the missing term in the series is 38.

Hence, the correct answer is "Option 2".