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Question 141

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

The given bar graphs shows the number of items brought by A and B in the year 2015, 2016 and 2017.

Difference between number of items brought by B and A in the year 2015 is x - 5. Find the value of x?

  1. AOption (a)

    10

  2. BOption (b)

    32

  3. COption (c)

    35

  4. DOption (d)

    15

  5. EOption (e)

    25

View answer & explanation

Correct answer

Answer: (d)D.

15

Why this answer is correct

Calculations:

Total number of items brought by A in the year 2015 = 120

Total number of items brought by B in the year 2015 = 130

Difference between number items brought by B and A is 130 - 120 = 10

So, x – 5 = 10 ⇒  x = 15.

Question 142

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

Find the value of x.

125 ÷ 5 ×  171 ÷ 27 ÷ 249 ×  9 = x ÷ 83

  1. AOption (a)

    525

  2. BOption (b)

    425

  3. COption (c)

    475

  4. DOption (d)

    325

  5. EOption (e)

    400

View answer & explanation

Correct answer

Answer: (c)C.

475

Why this answer is correct

Solution:

125 ÷ 5 ×  171 ÷ 27 ÷ 249 ×  9 = x ÷ 83

25 ×  (171/27) ×  (1/249) ×  9 = x/83

25 ×  (19/3) ×  (3/83) = x/83

x = 25 ×  19

x = 475

Question 143

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

Find the value of x.

42 ÷ 6 ×  3 + 5 – (8 + 7) + 123 = x

  1. AOption (a)

    128

  2. BOption (b)

    134

  3. COption (c)

    126

  4. DOption (d)

    122

  5. EOption (e)

    118

View answer & explanation

Correct answer

Answer: (b)B.

134

Why this answer is correct

Solution:

42 ÷ 6 ×  3 + 5 – (8 + 7) + 123 = x

7 ×  3 + 5 – (15) + 123 = x

21 + 5 – 15 + 123 = x

x = 134

Question 144

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

5265 ÷ 117 + 67 × 85 - 1172 + 289 + 263 - 120 = (?)

  1. AOption (a)

    5000

  2. BOption (b)

    5500

  3. COption (c)

    5100

  4. DOption (d)

    5198

  5. EOption (e)

    5200

View answer & explanation

Correct answer

Answer: (a)A.

5000

Why this answer is correct

Concept used:

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

Step - 1: Parts of an equation enclosed in 'Brackets' must be solved second, and following BODMAS rule in the bracket

Step - 2: Any mathematical 'Of' or 'Exponent' must be solved next.

Step - 3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated.

Step - 4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.

Calculations:

5265 ÷ 117 + 67 × 85 - 1172 + 289 + 263 - 120 = (?)

⇒ 45 + 5695 - 1172 + 289 + 263 - 120 = (?)

⇒  45 + 5695 - 1172 + 289 + 263 - 120 = (?)

⇒ 6292 - 1292 = (?)

⇒ ? = 5000

Hence, the correct answer is 5000.

Question 145

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

(159 + 321) ÷ 4 + (7250/50) + (4130 – 1270) ÷ 110 + 33 = ?2

  1. AOption (a)

    19

  2. BOption (b)

    18

  3. COption (c)

    16

  4. DOption (d)

    14

  5. EOption (e)

    20

View answer & explanation

Correct answer

Answer: (b)B.

18

Why this answer is correct

Concept used:

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

Step - 1: Parts of an equation enclosed in 'Brackets' must be solved second, and following BODMAS rule in the bracket

Step - 2: Any mathematical 'Of' or 'Exponent' must be solved next.

Step - 3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated.

Step - 4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.

Calculations:

(159 + 321) ÷ 4 + (7250/50) + (4130 – 1270) ÷ 110 + 33 = ?2

⇒ 480 ÷ 4 + 145 + 2860 ÷ 110 + 33 = ?2

⇒ 120 + 145 + 26 + 33 = ?2

⇒ 324 = ?2

⇒ √324 = ?

⇒ 18 = ?

Hence, the correct answer is 18.

Question 146

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

18 + 27 - 14 = ? + 10 + 20

  1. AOption (a)

    4

  2. BOption (b)

    5

  3. COption (c)

    1

  4. DOption (d)

    -1

  5. EOption (e)

    None of these.

View answer & explanation

Correct answer

Answer: (c)C.

1

Why this answer is correct

Given:

18 + 27 - 14 = ? + 10 + 20

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

18 + 27 - 14 = ? + 10 + 20

⇒ 45 - 14 = ? + 30

⇒ 31 = ? + 30

⇒ ? = 31 - 30 = 1

∴ The value of ? is 1

Question 147

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

(√1024 + 19 × 12) ÷ √676 - 4 + 4680 ÷ ? = 474

  1. AOption (a)

    10

  2. BOption (b)

    8

  3. COption (c)

    16

  4. DOption (d)

    3

  5. EOption (e)

    11

View answer & explanation

Correct answer

Answer: (a)A.

10

Why this answer is correct

Given:

(√1024 + 19 × 12) ÷ √676 - 4 + 4680 ÷ ? = 474

Concept Used:

​

Calculation:

(√1024 + 19 × 12) ÷ √676 - 4 + 4680 ÷ ? = 474

⇒ (32 + 228) ÷ 26 - 4 + 4680 ÷ ? = 474

⇒ 10 - 4 + 4680 ÷ ? = 474

⇒ 4680 ÷ ? = 468

⇒ 4680 ÷ 468 = ?

⇒ ? = 10

∴ The value of (?) is 10.

Question 148

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

(14)2 × 10 ÷ 4 - (15)2 + 16 = ?2 + 52

  1. AOption (a)

    4

  2. BOption (b)

    16

  3. COption (c)

    8

  4. DOption (d)

    10

  5. EOption (e)

    14

View answer & explanation

Correct answer

Answer: (b)B.

16

Why this answer is correct

Given:  

(14)2 × 10 ÷ 4 - (15)2 + 16 = ?2 + 52

Concept Used:

Follow the BODMAS rule according to the table given below:

Calculation:

(14)2 × 10 ÷ 4 - (15)2 + 16 = ?2 + 52

⇒ 196 × 10 × 1/4 - 225 + 16 = ?2 + 25

⇒ 98 × 5 - 225 + 16 = ?2 + 25

⇒ 490 - 225 + 16 = ?2 + 25

⇒ 490 - 225 + 16 - 25 = ?2 

⇒  ?2 = 506 - 250 = 256

⇒ ? = √256 = 16

∴ 16 will come in place of the question mark '?'.

Question 149

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

(72 × 6 - 36 × 6) ÷ 12 = 288 ÷ ?

  1. AOption (a)

    12

  2. BOption (b)

    26

  3. COption (c)

    16

  4. DOption (d)

    14

  5. EOption (e)

    18

View answer & explanation

Correct answer

Answer: (c)C.

16

Why this answer is correct

Concept used:

Follow the BODMAS rule according to the table given below:

 

Calculation:

⇒ (72 × 6 - 36 × 6) ÷ 12 = 288 ÷ ?

⇒ (432 - 216) ÷ 12 = 288 ÷ ?

⇒ 216 ÷ 12 = 288 ÷ ?

⇒ ? = 288 ÷ 18 = 16

∴ The value of ? is 16.

Question 150

IBPS RRB Office Assistant (Clerk) 2025• Numerical Ability

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

53 × 3 + 85 ÷ 5 - √(?) × 6 = 356

  1. AOption (a)

    25

  2. BOption (b)

    36

  3. COption (c)

    49

  4. DOption (d)

    64

  5. EOption (e)

    81

View answer & explanation

Correct answer

Answer: (b)B.

36

Why this answer is correct

Given:

53 × 3 + 85 ÷ 5 - √(?) × 6 = 356

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

53 × 3 + 85 ÷ 5 - √(?) × 6 = 356

⇒ 125 × 3 + 17 - √(?) × 6 = 356

⇒ 375 + 17 - √(?) × 6 = 356

⇒ √(?) × 6 = 36

⇒ √(?) = 6

⇒ ? = 62

⇒ ? = 36

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

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