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IBPS RRB Office Assistant (Clerk) · Topic Collection

Quantitative Aptitude PYQs

Arithmetic, number systems, percentages, ratios, profit and loss, time and work, algebra, geometry, mensuration, and trigonometry.

1935 Total Questions49 Official PapersYears: 2018–2025Search in Quantitative Aptitude
Showing questions 461–480 of 1935Page 24 of 97
RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 461

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

The line graph shows the number of persons attend seminar in five days of a week. 

Find the difference between number of people attend seminar on Monday and Wednesday together and number of people attend seminar on Thursday and Tuesday together?

  1. AOption (a)

    68

  2. BOption (b)

    80

  3. COption (c)

    85

  4. DOption (d)

    84

  5. EOption (e)

    66

View answer & explanation

Correct answer

Answer: (b)B.

80

Why this answer is correct

Calculation

People on Monday + Wednesday =

480 + 280 = 760

People on Thursday + Tuesday =

360 + 320 = 680

Required difference =

760 − 680 = 80

Answer: 80

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 462

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

The line graph shows the number of persons attend seminar in five days of a week. 

Ratio of number of male and female who attend seminar on Tuesday is 5:3. Value number of number of females attend seminar on Tuesday is 5t. Find the value of t?

  1. AOption (a)

    24

  2. BOption (b)

    26

  3. COption (c)

    28

  4. DOption (d)

    30

  5. EOption (e)

    32

View answer & explanation

Correct answer

Answer: (a)A.

24

Why this answer is correct

Calculation

On Tuesday, male : female = 5 : 3

Total people on Tuesday = 320

Number of females = 3 parts = [320 × 3 / 8] = 120

Given, number of females = 5t

Thus:

5t = 120

So, t = 24

Answer: 24

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 463

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

The line graph shows the number of persons attend seminar in five days of a week. 

On Monday, 75% people attend seminar out of total number of people register the seminar. Find the number of people register the seminar?

  1. AOption (a)

    560

  2. BOption (b)

    720

  3. COption (c)

    640

  4. DOption (d)

    620

  5. EOption (e)

    690

View answer & explanation

Correct answer

Answer: (c)C.

640

Why this answer is correct

Calculation

On Monday, 75% of registered people attended the seminar.

Let total registered people = x

Given:

75% of x = 480

 X = [480 × 100] / 75 = 640

640 people registered

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 464

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

Ratio of milk and water in 630 litre of mixture is 4 : 3. 140 litre mixture taken out. Find the quantity of milk now?

  1. AOption (a)

    220

  2. BOption (b)

    240

  3. COption (c)

    260

  4. DOption (d)

    280

  5. EOption (e)

    250

View answer & explanation

Correct answer

Answer: (d)D.

280

Why this answer is correct

Given:

The ratio of milk to water in 630 liters of mixture is 4:3.

140 liters of the mixture is taken out.

Calculations:

The total parts of the mixture = 4 + 3 = 7 parts.

Quantity of milk in the mixture = (4/7) × 630 = 360 liters of milk.

Quantity of water in the mixture = (3/7) × 630 = 270 liters of water.

When 140 liters of the mixture is taken out, the ratio of milk and water in the 140 liters will also be 4:3.

Milk taken out = (4/7) × 140 = 80 liters.

So, the remaining milk = 360 - 80 = 280 liters.

∴ The quantity of milk now is 280 liters.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 465

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

Simple interest at 8% rate of interest for 10 years is Rs. 17600. Find the principle?

  1. AOption (a)

    24000

  2. BOption (b)

    25000

  3. COption (c)

    22000

  4. DOption (d)

    26000

  5. EOption (e)

    32000

View answer & explanation

Correct answer

Answer: (c)C.

22000

Why this answer is correct

Given:

Rate of interest (r) = 8%

Time (t) = 10 years

Simple Interest (SI) = ₹17,600

Formula used:

SI = P × r × t / 100

Calculations:

17600 = P × 8 × 10 / 100

⇒ 17600 = P × 80 / 100

⇒ 17600 = P × 0.8

⇒ P = 17600 / 0.8

⇒ P = ₹22,000

∴ The principal is ₹22,000.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 466

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

When item sold at Rs. 1400 then there is profit percent is 40%. Find the profit amount when item sold at Rs. 1345?

  1. AOption (a)

    365

  2. BOption (b)

    356

  3. COption (c)

    345

  4. DOption (d)

    354

  5. EOption (e)

    352

View answer & explanation

Correct answer

Answer: (c)C.

345

Why this answer is correct

Given:

When the item is sold at Rs. 1400, profit percent is 40%.

Let the cost price be C.

Formula used:

Profit = Selling Price - Cost Price

Profit percent = (Profit / Cost Price) × 100

Calculations:

Profit percent = 40%, so:

(1400 - C) / C = 40 / 100

⇒ (1400 - C) = 0.4C

⇒ 1400 = 1.4C

⇒ C = 1400 / 1.4 = Rs. 1000

Now, when the item is sold at Rs. 1345, profit = 1345 - 1000 = Rs. 345

∴ The profit amount when the item is sold at Rs. 1345 is Rs. 345.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 467

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

24 × 9 + 84 ÷ 14 = (?) + 62

  1. AOption (a)

    236

  2. BOption (b)

    186

  3. COption (c)

    160

  4. DOption (d)

    320

  5. EOption (e)

    None of these.

View answer & explanation

Correct answer

Answer: (b)B.

186

Why this answer is correct

Given:

24 × 9 + 84 ÷ 14 = (?) + 62

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

24 × 9 + 84 ÷ 14 = (?) + 62

⇒ 216 + 6 = (?) + 36

⇒ ? = 222 - 36 = 186

∴ The value of ? is 186.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 468

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

60% of 135 - (√729 + ?) = 4

  1. AOption (a)

    90

  2. BOption (b)

    20

  3. COption (c)

    50

  4. DOption (d)

    30

  5. EOption (e)

    5

View answer & explanation

Correct answer

Answer: (c)C.

50

Why this answer is correct

Given:

60% of 135 - (√729 + ?) = 4

Concept Used:

Follow the BODMAS rule according to the table given below:

Calculation:

60% of 135 - (√729 + ?) = 4

⇒ 135 × (60/100) - (27 + ?) = 4

⇒ 135 × (3/5) - 27 - ? = 4

⇒ 81 - 27 - 4 = ?

⇒ 50 = ?

∴ 50 will come in place of the question mark ('?').

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 469

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

 207 - 7√3 × 5√3 = 17 + ?

  1. AOption (a)

    6

  2. BOption (b)

    -85

  3. COption (c)

    85

  4. DOption (d)

    95

  5. EOption (e)

    -95

View answer & explanation

Correct answer

Answer: (c)C.

85

Why this answer is correct

Given

207 - 7√3 × 5√3 = 17 + ?

Concept Used:

Follow the BODMAS rule according to the table given below:

Calculation:

207 - 7√3 × 5√3 = 17 + ?

⇒ 207 - 35 × 3 = 17 + ?

⇒ 207 - 105 = 17 + ?

⇒ 102 - 17 = ?

⇒ ? = 85

∴ 85 will come in place of the question mark ('?').

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 470

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

(13)2 + √169 × 17 – 26 × √81 = ?

  1. AOption (a)

    246

  2. BOption (b)

    256

  3. COption (c)

    156

  4. DOption (d)

    166

  5. EOption (e)

    None of these.

View answer & explanation

Correct answer

Answer: (c)C.

156

Why this answer is correct

Given:

(13)2 + √169 × 17 – 26 × √81 = ?

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

(13)2 + √169 × 17 – 26 × √81 = ?

⇒ (13)2 + √169 × 17 – 26 × √81 = ?

⇒ 169 + 221 – 234 = ?

⇒ ? = 156

∴ The value of ? is 156.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 471

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

{16 × 2 + √ 2704}/(? + 4) = 12

  1. AOption (a)

    2

  2. BOption (b)

    0.5

  3. COption (c)

    1

  4. DOption (d)

    4

  5. EOption (e)

    3

View answer & explanation

Correct answer

Answer: (e)E.

3

Why this answer is correct

Concept Used:

Follow the BODMAS rule according to the table given below:

 

Calculation:

⇒ {16 × 2 + √ 2704}/(? + 4) = 12

⇒ {32 + 52}/(? + 4) = 12

⇒ 84/12 = ? + 4

⇒ 7 = ? + 4

⇒ ? = 3

∴ The value of ? is 3.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 472

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What value can come in the place of the question mark (?) in the question below?

64 × (?% of 250) + 432 = 3632

  1. AOption (a)

    10

  2. BOption (b)

    20

  3. COption (c)

    15

  4. DOption (d)

    30

  5. EOption (e)

    25

View answer & explanation

Correct answer

Answer: (b)B.

20

Why this answer is correct

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

⇒ 64 × (?% of 250) + 432 = 3632

⇒ 64 × ?/100 × 250 = 3632 - 432

⇒ 16 × ? × 10 = 3200

⇒ ? = 20

∴ The value of ? is 20.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 473

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question? 

(12.25 + 8)1/2 × (1000)1/3 = ?

  1. AOption (a)

    15

  2. BOption (b)

    20

  3. COption (c)

    30

  4. DOption (d)

    45

  5. EOption (e)

    10

View answer & explanation

Correct answer

Answer: (d)D.

45

Why this answer is correct

Given:

(12.25 + 8)1/2 × (1000)1/3 = ?

Concept Used:

Follow BODMAS rule to solve this question, as per the order given below,

Calculation:

(12.25 + 8)1/2 × (1000)1/3 = ?

⇒ (20.25)1/2 × (1000)1/3 = ?

⇒ 4.5 × (10) = ?

⇒ ? = 45

∴ The required value is 45

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 474

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

5/12 × 480 + 150 = ?% of 875

  1. AOption (a)

    30

  2. BOption (b)

    35

  3. COption (c)

    20

  4. DOption (d)

    40

  5. EOption (e)

    25

View answer & explanation

Correct answer

Answer: (d)D.

40

Why this answer is correct

Concept Used:

Follow BODMAS rule to solve this question, as per the order given below, 

Calculation:

⇒ 5/12 × 480 + 150 = ?% of 875

⇒ 200 + 150 = ?/100 × 875

⇒ 350 = ?/100 × 875

⇒ ? = 350 × 100/875

⇒ ? = 40

∴ The value of ? is 40

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 475

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

(1/10) of (12.5 + 7.5) - 5 = ? - 10

  1. AOption (a)

    0

  2. BOption (b)

    5

  3. COption (c)

    15

  4. DOption (d)

    10

  5. EOption (e)

    7

View answer & explanation

Correct answer

Answer: (e)E.

7

Why this answer is correct

Given:

(1/10) of (12.5 + 7.5) - 5 = ? - 10

Concept:

Follow the BODMAS rule according to the table given below:

Calculation:

(1/10) of (12.5 + 7.5) - 5 = ? - 10

⇒ (1/10) × 20 - 5 = ? - 10

⇒ 2 - 5 = ? - 10

⇒ ? = 10 - 3

⇒ ? = 7

∴ 7 will come in place of the question mark ('?').

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 476

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

20% of 400 + 40 = ? + 30

  1. AOption (a)

    58

  2. BOption (b)

    118

  3. COption (c)

    90

  4. DOption (d)

    110

  5. EOption (e)

    100

View answer & explanation

Correct answer

Answer: (c)C.

90

Why this answer is correct

Given:  

20% of 400 + 40 = ? + 30

Concept:

Follow the BODMAS rule according to the table given below:

Calculation:

20% of 400 + 40 = ? + 30

⇒ (1/5) × 400 + 40 = ? + 30

⇒ 80 + 40 = ? + 30

⇒ 120 = ? + 30

⇒ ? = 120 - 30

⇒ ? = 90

∴ 90 will come in place of the question mark ('?').

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 477

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

48% of 250 + 3 × 7 - ? ÷ 9 = 137

  1. AOption (a)

    4

  2. BOption (b)

    18

  3. COption (c)

    27

  4. DOption (d)

    54

  5. EOption (e)

    36

View answer & explanation

Correct answer

Answer: (e)E.

36

Why this answer is correct

Given:

48% of 250 + 3 × 7 - ? ÷ 9 = 137

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

48% of 250 + 3 × 7 - ? ÷ 9 = 137

⇒ (48/100) × 250 + 21 - ? ÷ 9 = 137

⇒ 120 + 21 - ? ÷ 9 = 137

⇒ 141 - ? ÷ 9 = 137

⇒ ? ÷ 9 = 4

⇒ ? = 36

∴ 36 should come in place of the question mark (?).

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 478

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

54% of 150 + 4 × ? = 9% of 2900

  1. AOption (a)

    35

  2. BOption (b)

    40

  3. COption (c)

    45

  4. DOption (d)

    50

  5. EOption (e)

    55

View answer & explanation

Correct answer

Answer: (c)C.

45

Why this answer is correct

Given:

54% of 150 + 4 × ? = 9% of 2900

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

54% of 150 + 4 × ? = 9% of 2900

⇒ (54/100) × 150 + 4 × ? = (9/100) × 2900

⇒ 81 + 4 × ? = 261

⇒ 4 × ? = 180

⇒ ? = 45

∴ 45 should come in place of the question mark (?).

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 479

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of question mark ‘?’ in the following question?

20% of 225 + 62 = ?% of 180

  1. AOption (a)

    80

  2. BOption (b)

    75

  3. COption (c)

    40

  4. DOption (d)

    50

  5. EOption (e)

    45

View answer & explanation

Correct answer

Answer: (e)E.

45

Why this answer is correct

Concept used:

We have to follow the BODMAS rule

Calculation:

⇒ 20% of 225 + 62 = ?% of 180

⇒ 20/100 × 225 +  62 = ?/100 × 180

⇒ 45 + 36 = ?/10 × 18

⇒ 81 × 10/18 = ?

⇒ ? = 45

∴ The value of ? is 45.

RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4) (Previous Year Paper)·Numerical Ability
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Question 480

IBPS RRB Office Assistant (Clerk) 2024• Numerical Ability• Numerical Ability

What will come in the place of the question mark ‘?’ in the following question?

20 × 7.5 + √ 225 = ? × 5

  1. AOption (a)

    24

  2. BOption (b)

    33

  3. COption (c)

    45

  4. DOption (d)

    25

  5. EOption (e)

    30

View answer & explanation

Correct answer

Answer: (b)B.

33

Why this answer is correct

Concept Used:

Follow BODMAS rule to solve this question, as per the order given below, 

Calculation:

⇒  20 × 7.5 + √ 225 = ? × 5

⇒ 150 + 15 = ? × 5

⇒ 165 = ? × 5

⇒ ? = 33

∴ The value of ? is 33.

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How should I prepare for Quantitative Aptitude in IBPS RRB Office Assistant (Clerk)?

Solving previous year questions by topic helps identify recurring concepts, question patterns, and frequently asked sub-topics. Attempt each question, review the step-by-step explanation, and note down key formulas or facts for quick revision before the exam.