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A housing estate consists of 320 houses: 120 detached and 200 semi-detached. The numbers of children living in these houses are shown in the table.
A house estate is selected at random.
D denotes the event ' one child live in the house '.
R denotes the event 'no children live in the house'.
S denotes the event 'one child lives in the house '.
T denotes the event 'two children live in the house '.
(D' denotes the event 'not D'.)
Find:
(A) P(D);
(B)P(D and R);
(C)P(D union T);
(edited 1 year ago)
Reply 1
Original post by Namangawi
A housing estate consists of 320 houses: 120 detached and 200 semi-detached. The numbers of children living in these houses are shown in the table.
A house estate is selected at random.
D denotes the event ' one child live in the house '.
R denotes the event 'no children live in the house'.
S denotes the event 'one child lives in the house '.
T denotes the event 'two children live in the house '.
(D' denotes the event 'not D'.)
Find:
(A) P(D);
(B)P(D and R);
(C)P(D union T);

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