Which one is NOT an operating system?

Exercise and reference answers

Questions

1. Items

   1. Windows
   2. LibreOffice
   3. Linux
   4. Ubuntu

   Reason

   LibreOffice is application software. Windows, Linux and Ubuntu are all operating systems.

   Odd item

   LibreOffice

2. Items

   1. Android
   2. Fedora
   3. GIMP
   4. iOS

   Reason

   GIMP is a photo editor, so it is application software. The other three are operating systems.

   Odd item

   GIMP

3. Items

   1. Disk cleaner
   2. Antivirus
   3. Formatting tool
   4. Macintosh

   Reason

   Macintosh is an operating system. The other three are system utilities.

   Odd item

   Macintosh

Instructions

Tap the item that does not belong with the rest.

Explanation