In a water supply network, depicted below, the water is transferred from point A to point F through water tubes. At the positions marked with the numbers 1, 2, 3, and 4 on the graph, there are four switches which, if turned off, stop the water supply passing through the tube.

(i) Find a sample space for the experiment which describes the positions of the four switches (ON or OFF).
(ii) Identify each of the following events as a suitable subset of the sample space given in part (i):
A1: there is water flow from point D to point E;
A2: there is water flow from point B to point C;
A3: there is water flow from point A to point F.

Transcribed Image Text:

A D 2 E B C 4