A team of good hockey players of the world is a set or collection?

In the following example, try to identify the number of times the velocity of the ball changes :"A football player kicks a football to another player of his team who kicks the football towards the goal-keeper. The goal-keeper of opposite team collects the football and kicks it towards a player of his own team". Also identify the agent supplying the force in each case.

The collection of all students in your class is set or collection

A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponent. The force that acts on the player is

Which of the following are sets ? Justify your answer. A collection of most dangerous animals of the world.

In how many ways can one select a cricket team of eleven from 17 players in which only 5 players can bowl if each cricket team of 11 must include exactly 4 bowlers?

Which of the following are sets ? Justify your answer. The collection of all even integers.

Which of the following are sets ? Justify your answer. The collection of questions in this Chapter.