Question 1143815
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(1)  P = {{{(1/4)*(1/3)}}}.



(2)  P = 1 - {{{(1-1/4)*(1-1/3)}}} = 1 - {{{(3/4)*(2/3)}}} = 1 - {{{6/12}}} = 1 - {{{1/2}}} = {{{1/2}}}.



(3)  Complement to probability of n. (2),  i.e.  P = {{{1/2}}}.



(4)  P = {{{(1-1/4)*(1/3)}}} = {{{(3/4)*(1/3)}}} = {{{1/4}}}.
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