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Question Number 134117 by ClarkeMelodyWenkeh last updated on 27/Feb/21

Answered by TheSupreme last updated on 28/Feb/21

A=15  B=10  A∪B=A+B−A∩B=20  A∩B=15+10−20=5  p(A∩B)=((A∩B)/(A∪B))=(1/4)

$${A}=\mathrm{15} \\ $$$${B}=\mathrm{10} \\ $$$${A}\cup{B}={A}+{B}−{A}\cap{B}=\mathrm{20} \\ $$$${A}\cap{B}=\mathrm{15}+\mathrm{10}−\mathrm{20}=\mathrm{5} \\ $$$${p}\left({A}\cap{B}\right)=\frac{{A}\cap{B}}{{A}\cup{B}}=\frac{\mathrm{1}}{\mathrm{4}} \\ $$

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