Choose all of the statements that relate to the method of random sampling.

25 employees chosen out of a hat from a company of 250 employees.
Drawing 10 balls from 100 numbered bingo balls in a bowl.
A radio station asks you to phone in your opinion on a political candidate.
A sample in which every member of the population has an equal chance of being chosen.
An internet survey that asks readers their opinion on gun control.
A method where some elements of the population have no chance of selection.