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Question 441

RBI Assistant 2022• Numerical Ability

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

(15 + 24) × 3 ÷ 13 + 18 – 5 = ?

  1. AOption (a)

    25

  2. BOption (b)

    32

  3. COption (c)

    22

  4. DOption (d)

    17

  5. EOption (e)

    19

View answer & explanation

Correct answer

Answer: (c)C.

22

Why this answer is correct

Given:

(15 + 24) × 3 ÷ 13 + 18 – 5 = ?

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

(15 + 24) × 3 ÷ 13 + 18 – 5 = ?

⇒ (39) × 3 ÷ 13 + 18 - 5 = ?

⇒ ? = 9 + 18 - 5

? = 22

∴ The value of ? is 22

Question 442

RBI Assistant 2022• Numerical Ability

What should come in place of the question mark '?' in the following question?

13 × 3 of 5 ÷ 26 = ? + 2.5

  1. AOption (a)

    7

  2. BOption (b)

    6

  3. COption (c)

    4

  4. DOption (d)

    5

  5. EOption (e)

    None of these

View answer & explanation

Correct answer

Answer: (d)D.

5

Why this answer is correct

Given:

13 × 3 of 5 ÷ 26 = ? + 2.5

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

13 × 3 of 5 ÷ 26 = ? + 2.5

⇒ 13 × 15 ÷ 26 = ? + 2.5

⇒ (15/2) = ? + 2.5

⇒ 7.5 = ? + 2.5

⇒ ? = 7.5 - 2.5

⇒ ? = 5

∴ The value of '?' will be 5.

Question 443

RBI Assistant 2022• Numerical Ability

What should come in place of the question mark '?' in the following question?

10% of 450 - (8 × 5) = ? × 5

  1. AOption (a)

    8.2

  2. BOption (b)

    2

  3. COption (c)

    1

  4. DOption (d)

    5

  5. EOption (e)

    None of these

View answer & explanation

Correct answer

Answer: (c)C.

1

Why this answer is correct

Given:

10% of 450 - (8 × 5) = ? × 5

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

10% of 450 - (8 × 5) = ? × 5

⇒ 45 - 40 = ? × 5

⇒ 5 = ? × 5

⇒ ? = 1

∴ The value of '?' is 1.

Question 444

RBI Assistant 2022• Numerical Ability

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

(66)2 - (34)2 + ?2 = (60)2

  1. AOption (a)

    400

  2. BOption (b)

    40

  3. COption (c)

    20

  4. DOption (d)

    30

  5. EOption (e)

    15

View answer & explanation

Correct answer

Answer: (c)C.

20

Why this answer is correct

Given:

(66)2 - (34)2 + ?2 = (60)2

Formula Used:

a2 - b2 = (a + b)(a - b)

Concept Used:

Follow the BODMAS rule according to the table given below:

Calculation:

(66)2 - (34)2 + ?2 = (60)2

⇒ (66 + 34)(66 - 34) + ?2 = 3600

⇒ 100 × 32 + ?2 = 3600

⇒ ?2 = 3600 - 3200

⇒ ?2 = 400

⇒ ? = 20

∴ 20 will come in place of the question mark ('?').

Question 445

RBI Assistant 2022• Numerical Ability

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

3 × ? ÷ 9 = ∛729 × √121

  1. AOption (a)

    197

  2. BOption (b)

    300

  3. COption (c)

    297

  4. DOption (d)

    295

  5. EOption (e)

    None of these

View answer & explanation

Correct answer

Answer: (c)C.

297

Why this answer is correct

Given:

3 × ? ÷ 9 = ∛729 × √121  

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

3 × ? ÷ 9 = ∛729 × √121

⇒ 3 × ? × (1/9) = 9 × 11

⇒ ? = 3 × 9 × 11

⇒ ? = 297 

∴ The value of ? is 297.

Question 446

RBI Assistant 2022• Numerical Ability

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

∛3375 × 75% of 400 = ?/2

  1. AOption (a)

    8000

  2. BOption (b)

    7000

  3. COption (c)

    9000

  4. DOption (d)

    5000

  5. EOption (e)

    4000

View answer & explanation

Correct answer

Answer: (c)C.

9000

Why this answer is correct

Given:

∛3375 × 75% of 400 = ?/2

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

∛3375 × 75% of 400 = ?/2

⇒ 15 × (3/4) × 400 = ?/2

⇒ 15 × 300 = ?/2

⇒ ? = 9000

∴ The value of ? is 9000.

Hint

Percentage to Fraction
100% = 125% = 1/414.28% = 1/710% = 1/10
50% = 1/220% = 1/512.50% = 1/89.09% = 1/11
33.33% = 1/316.66% = 1/611.11% = 1/98.33% = 1/12
7.69% =1/137.14% = 1/146.67% = 1/156.25% = 1/16
5.88% = 1/175.56% = 1/185.26% = 1/195% = 1/20

Question 447

RBI Assistant 2022• Numerical Ability

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

225 ÷ 25 × 9 - 3 × ? = 60

  1. AOption (a)

    4

  2. BOption (b)

    5

  3. COption (c)

    6

  4. DOption (d)

    7

  5. EOption (e)

    8

View answer & explanation

Correct answer

Answer: (d)D.

7

Why this answer is correct

Given:

225 ÷ 25 × 9 - 3 × ? = 60

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

225 ÷ 25 × 9 - 3 × ? = 60

⇒ 9 × 9 - 3 × ? = 60

⇒ 3 × ? = 81 - 60

⇒ 3 × ? = 21

⇒ ? = 7

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

Question 448

RBI Assistant 2022• Numerical Ability

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

(1111 ÷ 11) - (650 ÷ 25) = 15 × ?

  1. AOption (a)

    5

  2. BOption (b)

    3

  3. COption (c)

    90

  4. DOption (d)

    60

  5. EOption (e)

    4

View answer & explanation

Correct answer

Answer: (a)A.

5

Why this answer is correct

Given:  

(1111 ÷ 11) - (650 ÷ 25) = 15 × ?

Concept:

Follow the BODMAS rule according to the table given below:

Calculation:

(1111 ÷ 11) - (650 ÷ 25) = 15 × ?

⇒ 101 - 26 = 15 × ?

⇒ 75 = 15 × ?

⇒ ? = 75/15

⇒ ? = 5

∴ 5 will come in place of the question mark ('?').

Question 449

RBI Assistant 2022• Numerical Ability

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

15 × 3 + 7 × ? + 24 ÷ 6 × 2 = 60

  1. AOption (a)

    5

  2. BOption (b)

    4

  3. COption (c)

    3

  4. DOption (d)

    2

  5. EOption (e)

    1

View answer & explanation

Correct answer

Answer: (e)E.

1

Why this answer is correct

Given:

15 × 3 + 7 × ? + 24 ÷ 6 × 2 = 60

Concept used:

Follow the BODMAS rule according to the table given below:

Calculation:

15 × 3 + 7 × ? + 24 ÷ 6 × 2 = 60

⇒ 45 + 7 × ? + 4 × 2 = 60

⇒ 45 + 7 × ? + 8 = 60

⇒ 7 × ? = 7

⇒ ? = 1

∴ 1 should come in place of the question mark (?).

Question 450

RBI Assistant 2022• Numerical Ability

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

(700 + 800 – 1300 + 800 ) ÷ ? = 200

  1. AOption (a)

    5

  2. BOption (b)

    4

  3. COption (c)

    3

  4. DOption (d)

    6

  5. EOption (e)

    7

View answer & explanation

Correct answer

Answer: (a)A.

5

Why this answer is correct

Concept used:

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

Calculation:

(700 + 800 – 1300 + 800 ) ÷ ? = 200

⇒ (1500 – 1300 + 800) ÷ ? = 200

⇒ (2300 – 1300) ÷ ? = 200

⇒ 1000 ÷ ? = 200

⇒ ? = 5

∴ The value of ? is 5

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