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Question 81

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

A trader buys a bag for Rs. 200 and sells it for Rs. 250. What is the profit percentage?

  1. AOption (a)

    20% 

  2. BOption (b)

    22% 

  3. COption (c)

    24% 

  4. DOption (d)

    25% 

View answer & explanation

Correct answer

Answer: (a)A.

20% 

Explanation not yet available.

Question 82

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

Aman bought goods for Rs. 1200 and sold them at a 15% loss. What was the selling price? 

  1. AOption (a)

    Rs. 990

  2. BOption (b)

    Rs. 1000

  3. COption (c)

    Rs. 1015

  4. DOption (d)

    Rs. 1020

View answer & explanation

Correct answer

Answer: (a)A.

Rs. 990

Explanation not yet available.

Question 83

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

In a class, boys and girls are in the ratio 10 : 15. If there are 50 students in total, how many are girls? 

  1. AOption (a)

    25

  2. BOption (b)

    30

  3. COption (c)

    35

  4. DOption (d)

    40

View answer & explanation

Correct answer

Answer: (a)A.

25

Explanation not yet available.

Question 84

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

A deposit grows so that the simple interest earned equals three times the principal at 15% per annum. After how many years does this happen? 

  1. AOption (a)

    12

  2. BOption (b)

    15

  3. COption (c)

    14

  4. DOption (d)

    20

View answer & explanation

Correct answer

Answer: (a)A.

12

Explanation not yet available.

Question 85

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

A boat goes downstream at 20 km/h and upstream at 10 km/h. What is the speed of the boat in still water? 

  1. AOption (a)

    12 km/h 

  2. BOption (b)

    13 km/h 

  3. COption (c)

    14 km/h 

  4. DOption (d)

    15 km/h 

View answer & explanation

Correct answer

Answer: (a)A.

12 km/h 

Explanation not yet available.

Question 86

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

Length of each side of a rhombus is 25 cm and one of the diagonals is 48 cm. What is the area of the rhombus? 

  1. AOption (a)

    331 cm2

  2. BOption (b)

    330 cm2

  3. COption (c)

    333 cm2

  4. DOption (d)

    336 cm2

View answer & explanation

Correct answer

Answer: (a)A.

331 cm2

Explanation not yet available.

Question 87

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

What is the square root of 1444? 

  1. AOption (a)

    38

  2. BOption (b)

    42

  3. COption (c)

    39

  4. DOption (d)

    41

View answer & explanation

Correct answer

Answer: (a)A.

38

Explanation not yet available.

Question 88

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed. 

  1. AOption (a)

    486 cm2

  2. BOption (b)

    476 cm2

  3. COption (c)

    576 cm2

  4. DOption (d)

    496 cm2

View answer & explanation

Correct answer

Answer: (a)A.

486 cm2

Explanation not yet available.

Question 89

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

A right circular cone is such that its slant height (I) is VS times its radius (r). If the slant height is 5√5 cm, what is its height (h)? 

  1. AOption (a)

    10 cm 

  2. BOption (b)

    12 cm

  3. COption (c)

    16 cm

  4. DOption (d)

    14 cm

View answer & explanation

Correct answer

Answer: (a)A.

10 cm 

Explanation not yet available.

Question 90

Delhi Police Constable 2025• Numerical Ability• Numerical Ability

A rectangular water tank is 6 m long, 4 m wide, and 2 m deep. It is filled halfway with water. The water is then pumped into cylindrical drums, each with a radius of 0.6 Mm and a height of 1 m. How many cylindrical drums are needed to store the water? Round your answer to the nearest whole number. (Use π = 3.14). 

  1. AOption (a)

    24

  2. BOption (b)

    22

  3. COption (c)

    26

  4. DOption (d)

    20

View answer & explanation

Correct answer

Answer: (a)A.

24

Explanation not yet available.