Question Discussion & Solution

The correct answer is Single-User Operating System.

Important Points

• Single-User Operating System
  • Performs a single task for Single-user.
  • This operating system is designed to manage the computer so that one user can effectively do one thing at a time.
  • Examples include Microsoft Windows.

Additional Information

• The different types of Operating System:
• Batch Operating System
  • There is no direct communication between the computer and the OS.
  • There is an intermediate, the Operator.
  • The operator distributes the work into batches.
• Real-Time Operating System
  • The processing time is very small between the user’s command and the output such that there is no operator.
• Time-Sharing Operating System
  • Multiple people at various computers can use a program at the same time.
• Distributed Operating System
  • When two or more systems are connected to each other and one can open each other's files.
• Embedded Operating System
  • These special Operating systems are built into larger systems.
  • They are limited to single specific functions like an ATM.
• Network Operating System
  • They have one main server which is connected to other client servers.
  • It provides a secure operating system for working with multiple users.

If '+' means 'divide by', '-' means 'add to', '×' means 'subtract from' and '/' means 'multiply by',

[{(20 × 6) × (7 / 2)} + (3 - 2)] / 5

We put the right symbol given is the question-

= [{(20 - 6) - (7 × 2)} / (3 + 2)] × 5

Now apply BODMAS rule

= [{14 - 14} / 5] × 5

= [0 / 5] × 5

= 0

Hence, "0" is the correct answer.

Total number of boxes of matchsticks = 3600

Total number of cartons = 10

Let the number of packets in one carton be x.

⇒ Number of packets in 10 cartons = 10x.

Number of boxes of matchstick in a packet = 30

⇒ Number of boxes of matchstick in 10x packets = 30(10x) = 300x

So, we have:

Total number of boxes = Number of boxes of matchstick in 10x packets

⇒ 300x = 3600

⇒ x = 12

The logic followed is:

L, M, X, Y and Z each having a different salary.

i) X is getting more salary than only M.

X > M

Important Points

As the word only is used this means X's salary is only greater than M.

ii) L is getting less salary than Y, who is not getting the highest salary.

Y > L but Y is not getting the highest. Y's salary is greater than L.

Mistake Points

Who is used for the second person in a connecting statement.

For example, in the above question : 

L is getting less salary than Y, who is not getting the highest salary.

Here, who is used for Y and not for L.

Thus combining the both we get:

Z > Y > L > X > M.

Thus Z is getting the highest salary.

Hence, the correct answer is "Z".

The correct answer is Yash Dhull.

Key Points

• Yash Dhull became only the third Indian batsman to score a century at the U19 World Cups.
• ICC Under 19 World Cup:
  • The ICC Under-19 Cricket World Cup is an international cricket tournament organized by the International Cricket Council (ICC).
  • It is contested by national under-19 teams.
  • The first edition was held in 1988, as the Youth World Cup.
  • It was not staged again until 1998. Since then, the World Cup has been held as a biennial event.
  • India has won the World Cup on a record 5th times and India is the most successful team.
  • After India, Australia has won 3 titles.
    • Format: 50 overs
    • First edition: 1988 (Australia)
    • Latest edition: 2020 (South Africa)
    • Next edition: 2022 (West Indies)
    • Number of teams: 16
    • Current champion:  Bangladesh (1st title)​ 

Additional InformationInternational Cricket Council:

• Predecessor: Imperial Cricket Conference (1909 - 1965), International Cricket Conference (1965 - 1989)
• Formation: 15 June 1909
• Headquarters: Dubai.
• Members: 106
• Chairman: Greg Barclay(New Zealand)
• Deputy Chairman: Imran Khwaja (Singapore).