Search Previous Year Questions

Find real questions from previous competitive exam papers with answers and solutions.

Leave the keyword blank to browse saved questions for your selected exam, newest papers first. Add a keyword, year or topic to narrow the results.

Browse complete papers
Showing 10 question(s)
Clear

Question 391

Kolkata Police SI 2018• Full Test

A grocer has a sale of Rs. 6,435, Rs. 6,927, Rs. 6,855 Rs. 7,230 and Rs. 6,562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6,500 ?

  1. AOption (a)

    Rs. 6,001

  2. BOption (b)

    Rs. 5,991

  3. COption (c)

    Rs. 4,991

  4. DOption (d)

    Rs. 6,991

View answer & explanation

Correct answer

Answer: (c)C.

Rs. 4,991

Why this answer is correct

Given:

Five consecutive months sale = Rs. 6,435, Rs. 6,927, Rs. 6,855, Rs. 7,230, Rs. 6,562

Six consecutive months average sale = Rs. 6,500

Formula Used:

Average = sum of values/number of values

Calculation:

Let sale of sixth month be Rs. x

Sum of sales of six consecutive months = Rs. (6435 + 6927 + 6855 + 7230 + 6562 + x)

⇒ Rs. (34009 + x)

Number of months = 6 

Average of sales of six consecutive months = Rs. (34009 + x)/6

⇒ Rs. 6500 = Rs. (34009 + x)/6

⇒ 6 × 6500 = 34009 + x

⇒ 39000 = 34009 + x

⇒ x = (39000 – 34009) 

⇒ x = 4991

∴ Rs. 4,991 sale must he have in the sixth month so that he gets an average sale of Rs. 6,500

Question 392

Kolkata Police SI 2018• Full Test

Rs. 700 is divided among Ram, Shyam and Jadu so that Ram receives half as much as Shyam and Shyam half as much as Jadu. What will be Jadu’s share ?

  1. AOption (a)

    Rs. 400

  2. BOption (b)

    Rs. 300

  3. COption (c)

    Rs. 200

  4. DOption (d)

    Rs. 500

View answer & explanation

Correct answer

Answer: (a)A.

Rs. 400

Why this answer is correct

Given :

Rs. 700 is divided among Ram, Shyam and Jadu

Calculation:

According to Question 

Let jadu has 4X unit 

Ram : shyam : Jadu = 1 : 2 : 4

⇒ (1+2+4)X = 700

⇒ 7X = 700

⇒ X = 100

Jadu receive 4X unit = 4 × 100 = 400

∴ Jadu will share Rs. 400.

Question 393

Kolkata Police SI 2018• Full Test

The ‘Bandhan Express’, passenger train runs between:-

  1. AOption (a)

    Sealdah to New Jalpaiguri

  2. BOption (b)

    Kolkata to Raiganj

  3. COption (c)

    Kolkata to Khulna

  4. DOption (d)

    Howrah to New Delhi

View answer & explanation

Correct answer

Answer: (c)C.

Kolkata to Khulna

Why this answer is correct

The correct answer is Kolkata to Khulna.

  • A new passenger train "Bandhan Express" runs between India and Bangladesh.
  • The Bandhan Express train is an international express rail service that runs between the Indian city of Kolkata (West Bengal) and the Bangladeshi city of Khulna every week.
  • It was started from the first service on 9 November 2017.

Additional Information

  • Maitree Express train service connecting Dhaka in Bangladesh to Kolkata in the Indian state of West Bengal in 2008.
  • Two trains are originating from India to Pakistan- The Samjhauta Express and the Thar Link Express.

Question 394

Kolkata Police SI 2018• Full Test

From the following 4 numbers, select that one which does not conform to the others:-

125, 64, 216, 81

  1. AOption (a)

    216

  2. BOption (b)

    64

  3. COption (c)

    125

  4. DOption (d)

    81

View answer & explanation

Correct answer

Answer: (d)D.

81

Why this answer is correct

Logic :- Cube of each number.

Given, 125, 64, 216, 81

125 → (5)3

64 → (4)3

216 → (6)3

81 → (3)4

So, 81 is different other 3 numbers.

Hence, the correct answer is "81".

Question 395

Kolkata Police SI 2018• Full Test

The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:-

  1. AOption (a)

    46%

  2. BOption (b)

    42%

  3. COption (c)

    40%

  4. DOption (d)

    44%

View answer & explanation

Correct answer

Answer: (d)D.

44%

Why this answer is correct

Given:

Each side of the Rectangle increases by 20 % 

Concept Used:

Concept of percentage. It is calculated on the basis of 100.

For example, x% means x out of 100.

Area of rectangle = Length × Breadth

Calculation:

Let, the length of the rectangle be l and the breadth be b

According to the Question,

Each side increases by 20% 

⇒ New length = (120/100) × l = (1.2 × l) and new breadth = (120/100)b = 1.2b

Initial area = l × b

new area with new side = (1.2 × l) × (1.2b) = 1.44 × lb 

\(Net;change = \frac{({1.44 - 1}) \times lb}{{lb}} × 100 = 44;% ;;\)

∴ The percentage in area is 44%.

Question 396

Kolkata Police SI 2018• Full Test

A man walks 3 km northwards and then turns left and goes 2 km. He again turns left and goes 3 km. Then he turns right and walks straight. In which direction he is walking now ?

  1. AOption (a)

    North

  2. BOption (b)

    West

  3. COption (c)

    East

  4. DOption (d)

    South

View answer & explanation

Correct answer

Answer: (b)B.

West

Why this answer is correct

Representing the given information on NESW :

So, man is finally walking in the west direction.

Hence, the correct answer is "West".

Question 397

Kolkata Police SI 2018• Full Test

The book, “A Century is not enough” is written by:-

  1. AOption (a)

    Rahul Dravid

  2. BOption (b)

    Sourav Ganguly

  3. COption (c)

    Sachin Tendulkar

  4. DOption (d)

    V. V. S. Laxman

View answer & explanation

Correct answer

Answer: (b)B.

Sourav Ganguly

Why this answer is correct

The correct answer is Sourav Ganguly.

Key Points

  • A Century is Not Enough: My Roller-coaster Ride to Success (2018) is an English autobiography written by former Indian cricketer and captain Sourav Ganguly.
  • Sourav Ganguly is the President of the Board of Control for Cricket in India.
  • He is known as Bengal Tiger, Dada, Prince of Calcutta, The God of the Off Side, The Maharaja, The Warrior Prince.
  • He is an Indian cricket administrator, commentator, and former national cricket team captain.
  • Sourav Ganguly scored 131 runs on his debut at Lord’s in June 1996. Till date, it is still the highest score by any international debutant player at Lord’s.
  • As a captain, Sourav Ganguly hit most centuries in a single World Cup. He hit 3 centuries in World Cup 2003.
  • Sourav Ganguly plays his last test series with Australia before retirement (Border-Gavaskar Trophy played in India in 2008).
  • Sourav Ganguly was the 'icon player' and captain of this team (Knight Riders) from Kolkata in the Indian Premier League.

Important Points

Rahul Dravid- He is a former Indian cricketer and captain of the Indian national team. - He is the Director of Cricket Operations at National Cricket Academy, Bengaluru, India. - He is also called ‘The Wall’ and ‘Mr. Dependable’. - Dravid has played 11 matches for Scotland in 2003. He joined Scotland as an overseas player for the National Cricket League in England. - ESPNCricinfo released a collection of all articles related to Rahul Dravid in a book titled – Rahul Dravid: Timeless Steel.
Sachin Tendulkar- Sachin Tendulkar is known as the god of cricket. - Sachin Tendulkar inherited the title Little Master from cricketer Sunil Gavaskar. - Sachin Tendulkar is a former Indian international cricketer who was also the captain of the Indian national team. - Sachin Tendulkar Played International Cricket For Pakistan Before Making His India Debut. - Sachin Tendulkar to receive Bharat Ratna. At the age of 40, Tendulkar is the youngest to be chosen for Bharat Ratna. - His autobiography "Playing It My Way" book was launched on 5 November 2014 in Mumbai.
V. V. S. Laxman- He is a former Indian international cricketer and a current cricket commentator and pundit. - Laxman made his Test debut again in South Africa.

Question 398

Kolkata Police SI 2018• Full Test

Select a suitable figure from the four alternatives that would complete the figure matrix:-

  1. AOption (a)

    3

  2. BOption (b)

    2

  3. COption (c)

    1

  4. DOption (d)

    4

View answer & explanation

Correct answer

Answer: (b)B.

2

Why this answer is correct

3rd image = 1st image + 4 dots outside.

When analyzing the assets given in the given matrix, it is seen that each row has 3 types of assets, each of which has been used once in each row.

In the last box of the each row, 4 dots on four corners of the shape are given.

Hence, the correct answer is "option (2)".

Question 399

Kolkata Police SI 2018• Full Test

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?

a_bbc_aab_cca_bbcc

  1. AOption (a)

    caba

  2. BOption (b)

    acba

  3. COption (c)

    bacb

  4. DOption (d)

    abba

View answer & explanation

Correct answer

Answer: (b)B.

acba

Why this answer is correct

Putting options in the blank spaces :

Option 1) A C B B C A A A B B C C A A B B C C

Option 2) A A B B C C A A B B C C A A B B C C

Option 3) A B B B C A A A B C C C A B B B C C 

Option 4) A A B B C B A A B B C C A A B B C C

Option (2) is giving a pattern of aabbccaabbccaabbcc.

No other option is giving any particular pattern.

Hence, the correct answer is "acba".

Question 400

Kolkata Police SI 2018• Full Test

UIDAI stands for:-

  1. AOption (a)

    Universal Identification Authority of India

  2. BOption (b)

    Unique Identification Authority of India

  3. COption (c)

    Urban Industries Development Authority of India

  4. DOption (d)

    Unique Individual Descriptive Authority of India

View answer & explanation

Correct answer

Answer: (b)B.

Unique Identification Authority of India

Why this answer is correct

The correct answer is the Unique Identification Authority of India.

Key Points

  • The Unique Identification Authority of India (UIDAI) is a statutory authority established under the provisions of the Aadhaar (Targeted Delivery of Financial and Other Subsidies, Benefits and Services) Act, 2016 which is popularly known as Aadhaar Act 2016 by the Government of India, under the Ministry of Electronics and Information Technology (MeitY).
  • Under the Aadhaar Act 2016, UIDAI is responsible for Aadhaar enrolment and authentication, including operation and management of all stages of the Aadhaar life cycle, developing the policy, procedure, and system for issuing Aadhaar numbers to individuals, and perform authentication and the security of identity information and authentication records of individuals.

Additional Information

  • Prior to its establishment as a statutory authority, UIDAI was functioning as an attached office of the then Planning Commission (now NITI Aayog) after its establishment on 28th January 2009.
  • Later, on 12 September 2015, the Government revised the Allocation of Business Rules to attach the UIDAI to the Department of Electronics & Information Technology (DeitY) of the then Ministry of Communications and Information Technology.
  • UIDAI was created with the objective to issue Unique Identification numbers (UID), named as "Aadhaar", to all residents of India.
  • The UID had to be
  • Robust enough to eliminate duplicate and fake identities.
  • Verifiable and authenticable in an easy, cost-effective way.
  • The first UID number was issued on 29 September 2010 to a resident of Nandurbar, Maharashtra. The Authority has so far issued more than 124 crore Aadhaar numbers to the residents of India.
Page 40
Next