Question Discussion & Solution

Here the pattern is,

1^st letter: Decrease by - 1

O - 1→ N – 1 → M - 1 → L – 1 → K

2^nd letter: increase by + 2

L + 2 → N + 2→ P + 2 → R + 2 → T

3^rd letter: Decrease by - 1

T - 1→ S – 1 → R - 1 → Q – 1 → P

First is managed by the second.

Thus, Jailor is the related to prison.

The pattern here is,

The Lungs is a part of the body’s Respiratory system.

Similarly, Heart is a part of the body’s Circulatory System.

The correct answer is Projector.

Important Points

•  Projector
  • ​A projector is an optical device that projects an image (or moving images) onto a projection screen.
  • There are four main types including;
    • ​DLP: Digital Light Processing, 
    • LCD: Liquid Crystal Display
    • LCOS: Liquid Crystal on Silicon. 
    • Laser projectors 

​Key Points

• Output device
  • An output device is any hardware device used to send data from a computer to another device or user.
  • Some of the output devices are:
    • Visual Display Units (VDU)
    • Monitor, Printer,
    • Graphic Output devices,
    • Plotters, Speakers.

Additional Information

• Mouse
  • A computer mouse is a hand-held pointing device that detects two-dimensional motion relative to a surface. 
• Optical Character Recognition, or OCR
  • ​It is a technology that enables to convert different types of documents, such as scanned paper documents, PDF files or images captured by a digital camera into editable and searchable data.
• Webcam
  • A webcam is a camera that connects to a computer.
  • It captures still pictures or motion video.
  • with the aid of software, can transmit its video on the Internet in real-time.