A collection of a set of instrument that solve a problem is called ...

The answer is Internet. Therefore,

A collection of a set of instrument that solve a problem is called internet.

Refer below for the explanation.

Explanation:

Internet itself is the biggest problem solver, hence it is in reach of the millions of its users. You can get solution of your problem by just one click. Hence it is a life-saver for students to complete their daily assignments, as well as in work life, it is also a big entertainment platform for every age individuals.

Internet

Explanation:

A collection of a set of instrument that solve a problem is called the internet.

The Internet is an enormous networking infrastructure that uses the Internet protocol suite (TCP/IP). It connects millions of computers together globally, forming a network in which computers can communicate with each other provided that they are both connected to the Internet.

The Internet contains billions of web pages and resources created by software engineers from around the world, making it a limitless place to locate information and solve peculiar problems.