Question Number 210972 by ujah last updated on 25/Aug/24
Answered by TonyCWX08 last updated on 25/Aug/24
$${a}.\: \\ $$$${n}\left({C}\:{only}\right)\:=\:\mathrm{18}−\mathrm{6}−\mathrm{3}=\mathrm{9} \\ $$$$ \\ $$$${b}. \\ $$$${n}\left({One}\:{subject}\:{only}\right) \\ $$$$={n}\left({C}\:{only}\right)\:+\:{n}\left({P}\:\:{only}\right)\:+\:{n}\left({M}\:{only}\right) \\ $$$$=\mathrm{9}+\mathrm{5}+\left(\mathrm{22}−\mathrm{6}−\mathrm{2}\right) \\ $$$$=\mathrm{14}+\mathrm{14} \\ $$$$=\mathrm{28} \\ $$$$ \\ $$$${c}. \\ $$$${n}\left({Two}\:{subject}\:{only}\right) \\ $$$$=\mathrm{3}+\mathrm{2} \\ $$$$=\mathrm{5} \\ $$
Commented by TonyCWX08 last updated on 25/Aug/24
$$ \\ $$
Answered by mm1342 last updated on 25/Aug/24
$$\mathrm{32}−\mathrm{16}=\mathrm{16} \\ $$$$\Rightarrow{x}+{y}+{z}=\mathrm{16}\:\:\:\&\:\:{z}+{y}=\mathrm{9}\:\:\&\:\:{y}+{x}=\mathrm{14} \\ $$$$\Rightarrow{x}=\mathrm{7}\:\:\&\:\:{y}=\mathrm{7}\:\:\&\:\:{z}=\mathrm{2} \\ $$$$\Rightarrow{ans} \\ $$$$\left({a}\right):\:\mathrm{2}\:\:\:\:\:\:\left({b}\right)\::\:\mathrm{14}\:\:\:\:\left({c}\right):\:\mathrm{12} \\ $$$$ \\ $$
Commented by mm1342 last updated on 25/Aug/24
Commented by TonyCWX08 last updated on 25/Aug/24
$${okay} \\ $$