Delhi Police Constable · Topic Collection

Quantitative Aptitude PYQs

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

1680 Total Questions112 Official PapersYears: 2017–2026Search in Quantitative Aptitude
Showing questions 41–60 of 1680Page 3 of 84
Delhi Police Constable (Executive) (Held On: 03 Jan, 2026 Shift 3) (Previous Year Paper)·Numerical Ability
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Question 41

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A train travels 36 km at a speed of 9 km/h. How much time will it take?

  1. AOption (a)

    4 hr

  2. BOption (b)

    3 hr

  3. COption (c)

    2 hr

  4. DOption (d)

    5 hr

View answer & explanation

Correct answer

Answer: (a)A.

4 hr

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 03 Jan, 2026 Shift 3) (Previous Year Paper)·Numerical Ability
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Question 42

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

Two rectangles have lengths in the ratio 2:3 and widths in the ratio 4:5. What is the ratio of their areas?

  1. AOption (a)

    8:15

  2. BOption (b)

    6:15

  3. COption (c)

    4:9

  4. DOption (d)

    10:15

View answer & explanation

Correct answer

Answer: (a)A.

8:15

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 03 Jan, 2026 Shift 3) (Previous Year Paper)·Numerical Ability
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Question 43

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

The diagonal of a rectangle is 17 cm and its area is \( 120 \text{ cm}^2 \). The perimeter of the rectangle is:

  1. AOption (a)

    23 cm

  2. BOption (b)

    34 cm

  3. COption (c)

    46 cm

  4. DOption (d)

    68 cm

View answer & explanation

Correct answer

Answer: (a)A.

23 cm

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 03 Jan, 2026 Shift 3) (Previous Year Paper)·Numerical Ability
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Question 44

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

The sides of a triangle are 6 cm, 8 cm, and 10 cm. Its area and the length of the altitude to the longest side are, respectively:

  1. AOption (a)

    \( 24 \text{ cm}^2, 4.8 \text{ cm} \)

  2. BOption (b)

    \( 24 \text{ cm}^2, 6 \text{ cm} \)

  3. COption (c)

    \( 48 \text{ cm}^2, 4.8 \text{ cm} \)

  4. DOption (d)

    \( 48 \text{ cm}^2, 9.6 \text{ cm} \)

View answer & explanation

Correct answer

Answer: (a)A.

\( 24 \text{ cm}^2, 4.8 \text{ cm} \)

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 03 Jan, 2026 Shift 3) (Previous Year Paper)·Numerical Ability
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Question 45

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

If \( \frac{4}{5}A = 3B = \frac{2}{3}C \), then find the value of \( A : B : C \)?

  1. AOption (a)

    12 : 45 : 10

  2. BOption (b)

    9 : 12 : 16

  3. COption (c)

    1 : 2 : 3

  4. DOption (d)

    15 : 4 : 18

View answer & explanation

Correct answer

Answer: (a)A.

12 : 45 : 10

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 46

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

The average of 10 numbers is 18. If two numbers are removed and the new average of the remaining 8 numbers becomes 20, what is the average of the two numbers that were removed?

  1. AOption (a)

    10

  2. BOption (b)

    12

  3. COption (c)

    14

  4. DOption (d)

    16

View answer & explanation

Correct answer

Answer: (a)A.

10

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 47

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

The length of a wire is used to make three equal circles. Find the radius of each circle if the total length of the wire is 132 cm. \( (\pi=22/7) \)

  1. AOption (a)

    7 cm

  2. BOption (b)

    14 cm

  3. COption (c)

    11 cm

  4. DOption (d)

    21 cm

View answer & explanation

Correct answer

Answer: (a)A.

7 cm

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 48

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A runner completes a 400 m lap in 80 seconds. Find his speed in km/h.

  1. AOption (a)

    16

  2. BOption (b)

    18

  3. COption (c)

    20

  4. DOption (d)

    22

View answer & explanation

Correct answer

Answer: (a)A.

16

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 49

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A train 100 m long crosses a bridge in 20 seconds while moving at 36 km/h. Determine the length of the bridge.

  1. AOption (a)

    80 m

  2. BOption (b)

    90 m

  3. COption (c)

    100 m

  4. DOption (d)

    120 m

View answer & explanation

Correct answer

Answer: (a)A.

80 m

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 50

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A trader buys an item for ₹500 and gains 20%. What is the selling price?

  1. AOption (a)

    ₹600

  2. BOption (b)

    ₹590

  3. COption (c)

    ₹580

  4. DOption (d)

    ₹610

View answer & explanation

Correct answer

Answer: (a)A.

₹600

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 51

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A shopkeeper sold an article for ₹864 at a 20% profit. What was its cost price?

  1. AOption (a)

    ₹710

  2. BOption (b)

    ₹720

  3. COption (c)

    ₹730

  4. DOption (d)

    ₹740

View answer & explanation

Correct answer

Answer: (a)A.

₹710

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 52

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A container has 40 litres of water and 60 litres of milk. Find the ratio of water to milk.

  1. AOption (a)

    4:5

  2. BOption (b)

    3:4

  3. COption (c)

    3:2

  4. DOption (d)

    2:3

View answer & explanation

Correct answer

Answer: (a)A.

4:5

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 53

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

If \( A:B=5:7 \) and \( B:C=9:11 \), find \( A:B:C \).

  1. AOption (a)

    45:63:77

  2. BOption (b)

    45:77:99

  3. COption (c)

    35:63:77

  4. DOption (d)

    55:77:99

View answer & explanation

Correct answer

Answer: (a)A.

45:63:77

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 54

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A man invests ₹1500 at 10% simple interest per annum. How much interest will he earn in 2 years and 6 months?

  1. AOption (a)

    ₹350

  2. BOption (b)

    ₹360

  3. COption (c)

    ₹370

  4. DOption (d)

    ₹375

View answer & explanation

Correct answer

Answer: (a)A.

₹350

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 55

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A cyclist covers a distance of 450 metres in 30 seconds. What is his speed in km/h?

  1. AOption (a)

    36

  2. BOption (b)

    54

  3. COption (c)

    45

  4. DOption (d)

    60

View answer & explanation

Correct answer

Answer: (a)A.

36

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 56

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

Find the total surface area of the hemisphere whose base radius is 24 cm (take \( \pi = 3.14 \)).

  1. AOption (a)

    6534.8 \( cm^{2} \)

  2. BOption (b)

    3428.8 \( cm^{2} \)

  3. COption (c)

    9872.8 \( cm^{2} \)

  4. DOption (d)

    5425.92 \( cm^{2} \)

View answer & explanation

Correct answer

Answer: (a)A.

6534.8 \( cm^{2} \)

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 57

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

The total surface area of a solid hemisphere is \( 16632\ cm^{2} \), Its volume is : (\( \pi=22/7 \))

  1. AOption (a)

    178422 \( cm^{3} \)

  2. BOption (b)

    198722 \( cm^{3} \)

  3. COption (c)

    176432 \( cm^{3} \)

  4. DOption (d)

    155232 \( cm^{3} \)

View answer & explanation

Correct answer

Answer: (a)A.

178422 \( cm^{3} \)

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 58

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

What is the approximate volume of a spherical shell whose inner and outer radii are 10cm and 12 cm respectively (\( \pi=3.14 \)).

  1. AOption (a)

    2560.02 \( cm^{3} \)

  2. BOption (b)

    7860.02 \( cm^{3} \)

  3. COption (c)

    4672.02 \( cm^{3} \)

  4. DOption (d)

    3050.02 \( cm^{3} \)

View answer & explanation

Correct answer

Answer: (a)A.

2560.02 \( cm^{3} \)

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 59

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

Maharshi salary was increased by 20% and then new salary decreased by 20%. Then Percentage change in his salary is:

  1. AOption (a)

    4% decreased

  2. BOption (b)

    4% Increased

  3. COption (c)

    8% Increased

  4. DOption (d)

    8% decreased

View answer & explanation

Correct answer

Answer: (a)A.

4% decreased

Explanation not yet available.
Delhi Police Constable (Executive) (Held On: 05 Jan, 2026 Shift 2) (Previous Year Paper)·Numerical Ability
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Question 60

Delhi Police Constable 2026• Numerical Ability• Numerical Ability

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left?

  1. AOption (a)

    \( \frac{1}{4} \)

  2. BOption (b)

    \( \frac{1}{10} \)

  3. COption (c)

    \( \frac{7}{15} \)

  4. DOption (d)

    \( \frac{8}{15} \)

View answer & explanation

Correct answer

Answer: (a)A.

\( \frac{1}{4} \)

Explanation not yet available.

How should I prepare for Quantitative Aptitude in Delhi Police Constable?

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.