A good rule of thumb:
Of the stars in the sky 1/2 are in double star systems
Of the double stars in the sky 1/3 are in triple star systems
Of the triple stars in the sky 1/4 are in quartenary systems
ad infinitum
It's not precisely correct, but uncertainty in these numbers are so large that it is within the error bars.
Nazil's system
On average, it is believed that about 55% of all stars are in multiple star systems.
HUGE telescopes and a little bit of physics.
There's a flaw in the premise here: hundreds of other systems have been detected. However, the information available about just one (our own) is sufficient to speculate on genesis.
Current observations seem to suggest that about 50% of all stars are multiple star systems
Nazil's system
On average, it is believed that about 55% of all stars are in multiple star systems.
HUGE telescopes and a little bit of physics.
Astronomers have found Earth-sized planets in other solar systems.
Multiple parties are typically common in democratic systems. These many parties are why a democratic nation can operate most efficiently.
Double and multiple star systems are fairly common, but I am not sure whether there is enough information to state which one is more common. There is a possible selection bias, and the answer will depend on whether you include star clusters in "multiple systems".
parliamentary
A Multi-tasking system is a system that can handle multiple tasks at the same time. Modern operating systems (Windows XP for example) can run multiple programs at the same time, and are a good example of multitasking systems
Global systems refer to information systems or policies that affect multiple nations. Only businesses that operate in a global environment are affected by global systems.
Yes, there are multiple types.
parliamentary
A Multi-tasking system is a system that can handle multiple tasks at the same time. Modern operating systems (Windows XP for example) can run multiple programs at the same time, and are a good example of multitasking systems