Reasoning PYQs

Given: Let the original number = 100

According to Question: The number is increased by 20% and then decreased by 20%.

Increase = 20% of 100

20% of 100 = (20 / 100) × 100 = 20

So, new number after increase = 100 + 20 = 120

Decrease = 20% of 120

20% of 120 = (20 / 100) × 120 = 24

So, new number after decrease = 120 − 24 = 96

Net change = 100 − 96 = 4 (decrease)

Hence, the correct answer is Option 2.

BODMAS Table: 

Given equation: 7 × 3 ÷ 6 - 4 + 2 = ?

Now, if

‘×’ stands for addition,

‘÷’ stands for subtraction,

‘+’ stands for multiplication, and

‘-’ stands for division, then:

⇒ 7 + 3 - 6 ÷ 4 × 2 = ?

⇒ 7 + 3 - (6 ÷ 4) × 2

⇒ 7 + 3 - (1.5 × 2)

⇒ 7 + 3 - 3

⇒ 10 - 3

⇒ 7

Hence, the correct answer is "Option 1".

BODMAS Table: 

Given equation: {20 D (25 D 33)} V {- 5 S 4 D (- 6)} P 56 V (- 27 P 13) = ?

Now, if ‘P’ denotes ‘addition’, ‘D’ denotes ‘subtraction’, ‘S’ denotes ‘multiplication’ and ‘V’ denotes ‘division’, then:

⇒ {20 - (25 - 33)} ÷ {- 5 × 4 - (- 6)} + 56 ÷ (- 27 + 13) = ?

⇒ {20 - (-8)} ÷ {-20 + 6} + 56 ÷ (-14) = ?

⇒ {28} ÷ {-14} + (-4) = ?

⇒ -2 + (-4) = -6.

Hence, the correct answer is "Option 1".

BODMAS Table: 

Given equation: 24 - 6 + 3 ÷ 2 × 4 = ?

Now, if ‘+’ means ‘division’, ‘-’ means ‘multiplication’, ‘x’ means ‘addition’ and ‘÷’ means ‘subtraction’, then:

⇒ 24 × 6 ÷ 3 - 2 + 4 = ?

⇒ 144 ÷ 3 - 2 + 4 = ?

⇒ 48 - 2 + 4 = ?

⇒ 46 + 4 = 50.

Hence, the correct answer is "Option 2".

Family Chart:

Given: 

A is the father of B.

B is the husband of C.

D is the daughter of C.

So, A is Grandfather of D.

Hence, the correct answer is "Option 2".

The logic followed here is:

Logic: The first word is reversed to get the second word.

Given: FLOW : WOLF

FLOW reversed → WOLF

Now, apply the same logic to STOP:

STOP reversed → POTS

Hence, the correct answer is "Option 1".

The logic followed here is:

thus, "53" will replace the question mark in the given series.

Hence, the correct option is "Option 2".

Given Statement:

The new mobile app launched by the municipality helps citizens report garbage or broken infrastructure.

Conclusions:

I. Citizens can contribute to better civic maintenance through the app - True (Because, the app allows citizens to report garbage or broken infrastructure, which directly helps in improving civic maintenance.)

II. The municipality no longer needs field inspectors - False (Because, the statement does not mention anything about removing field inspectors. Reporting through an app does not imply inspectors are no longer required.)

So, Only conclusion I follows.

Hence, the correct answer is "Option 1".

Given Statement:

The city traffic department has installed speed bumps on major roads.

Conclusions:

I. Speed bumps help in reducing accidents - True (Because, speed bumps are generally installed to slow down vehicles and improve road safety, which indicates they help in reducing accidents.)

II. Drivers are often overspeeding on major roads - False (Because, the statement does not mention overspeeding by drivers. Installation of speed bumps does not definitely prove that drivers are often overspeeding. It can be possible only.)

So, Only conclusion I follows.

Hence, the correct answer is "Option 1".

The logic followed here is:

Logic: Each letter is converted to its alphabetical position, and repeated letters are coded twice.

Given,

GANGA → 7 1 11 4 7 1

G → 7

A → 1

N → 14

G → 7

A → 1

Now, YAMUNA:

Y → 25

A → 1

M → 13

U → 21

N → 14

A → 1

So, YAMUNA → 25 1 13 21 14 1

Hence, the correct answer is "Option 1".

The logic followed here is:

So, 'EVE' will replace the question mark in the given series.

Hence, the correct answer is "Option 1".

The logic followed here is:

Logic: All options except one are environmental conservation methods, while one is a source of energy technology.

Rainwater Harvesting → Conservation method

Afforestation → Conservation method

Deforestation → Environmental degradation 

Solar Panels → Renewable energy technology

Hence, the correct answer is "Option 3".

The logic followed here is:

Logic: Each letter is shifted +1 forward in the English alphabet.

Given,

RUN → SVO

Now, applying the same logic to JUMP:

So, JUMP → K V N Q

Hence, the correct answer is "Option 4".

The logic followed here is:

Logic: This is a magic square, where the sum of each row, each column, and both diagonals is 15.

Check rows:

Row 1: 4 + 9 + 2 = 15 

Row 2: 3 + 5 + 7 = 15 

Row 3: 8 + 1 + ? = 15 → 8 + 1 + ? = 15 → ? = 6

thus, "6" will replace the question mark in the given series.

Hence, the correct option is "Option 1".

BODMAS Table: 

Given equation: 12 + 3 - 8 x 2 ÷ 1 = ?

Now, if ‘+’ means ‘divided by’, ‘-’ means ‘multiplied by’, ‘x’ means ‘minus’ and ‘÷’ means ‘plus’, then:

⇒ 12 ÷ 3 × 8 - 2 + 1 = ?

⇒ 4 × 8 - 2 + 1 = ?

⇒ 32 - 2 + 1 = ?

⇒ 30 + 1 = 31.

Hence, the correct answer is "Option 2".

Family Chart:

Given: 

"Your father" → B’s father.

"The only son of your father" → B’s father’s only son → B himself.

"I am the daughter of B" → A is B’s daughter.

So, B is A’s father.

Hence, the correct answer is "Option 2".

BODMAS Table: 

Now, if ‘×’ = ‘-’, ‘-’ = ‘+’, ‘/’ = ‘×’ and ‘+’ = ‘÷’, then:

Option (1) 12 × 4 - 2 + 8 / 4 = 11

⇒ 12 - 4 + 2 ÷ 8 × 4 = ?

⇒ 12 - 4 + (2 ÷ 8 × 4) = ?

⇒ 12 - 4 + (0.25 × 4) = ?

⇒ 12 - 4 + 1 = ?

⇒ 8 + 1 = 9 ≠ 11

Option (2) 18 - 6 × 3 + 2 / 2 = 13

⇒ 18 + 6 - 3 ÷ 2 × 2 = ?

⇒ 18 + 6 - (3 ÷ 2 × 2) = ?

⇒ 18 + 6 - (1.5 × 2) = ?

⇒ 24 - 3 = 21 ≠ 13

Option (3) 14 + 7 - 3 / 2 × 1 = 16

⇒ 14 ÷ 7 + 3 × 2 - 1 = ?

⇒ 2 + 3 × 2 - 1 = ?

⇒ 2 + 6 - 1 = ?

⇒ 8 - 1 = 7 ≠ 16

Option (4) 20 - 4 + 8 / 2 × 1 = 20

⇒ 20 + 4 ÷ 8 × 2 - 1 = ?

⇒ 20 + (4 ÷ 8 × 2) - 1 = ?

⇒ 20 + (0.5 × 2) - 1 = ?

⇒ 20 + 1 - 1 = 20

⇒ 20 = 20

Hence, the correct answer is "Option 4".

BODMAS Table: 

Given equation: 8 × 4 + 2 - 2 = ?

Now, if ‘×’ means ‘+’, ‘+’ means ‘-’ and ‘-’ means ‘÷’, then:

⇒ 8 + 4 - 2 ÷ 2 = ?

⇒ 8 + 4 - 1 = ?

⇒ 12 - 1 = 11.

Hence, the correct answer is "Option 4".

The logic followed here is:

Logic: Each number in the series is calculated by multiplying the two numbers that came right before it.

thus, "1944" will replace the question mark in the given series.

Hence, the correct option is "Option 1".

The logic followed here is:

thus, "39, 81" will replace the question mark in the given series.

Hence, the correct option is "Option 3".