Question Number 198975 by mr W last updated on 26/Oct/23
$$\mathrm{60}\:{students}\:{of}\:{a}\:{school}\:{must}\:{take} \\ $$$${at}\:{least}\:{one}\:{of}\:{the}\:{three}\:{courses}\:{for} \\ $$$${mathematics},\:{physics}\:{and}\:{chemistry} \\ $$$${respectively}. \\ $$$${if}\:{a}\:{student}\:{is}\:{randomly}\:{picked},\:{what} \\ $$$${is}\:{the}\:{probability}\:{that}\:{he}/{she}\:{takes} \\ $$$${only}\:{one}\:{course}? \\ $$
Commented by AST last updated on 26/Oct/23
$${Do}\:{you}\:{have}\:{an}\:{answer}\:{to}\:{the}\:{question}? \\ $$
Commented by necx122 last updated on 26/Oct/23
It's funny, Mr. W posts a question and no one gives an attempt or can solve��. As for me, I'm trying but not up to the task at the moment.
Commented by AST last updated on 26/Oct/23
$${Is}\:{the}\:{information}\:{sufficient}? \\ $$$$\mathrm{60}\:{students}\:{take}\:{atleast}\:{one}\:{of}\:{the}\:{courses} \\ $$$$\Rightarrow\mid{PuBuC}\mid=\mathrm{60}?{Is}\:{this}\:{what}\:{the}\:{question}\:{implies}? \\ $$
Commented by mr W last updated on 26/Oct/23
$${each}\:{of}\:{the}\:\mathrm{60}\:{students}\:{takes}\:{at}\:{least} \\ $$$${one}\:{course}. \\ $$
Commented by mr W last updated on 26/Oct/23
$${no}\:{sir}.\:{i}'{m}\:{still}\:{thinking}\:{about}\:{it}. \\ $$
Commented by AST last updated on 26/Oct/23
$${I}\:{guess}\:{the}\:{information}\:{provided}\:{is}\:{not} \\ $$$${sufficient}\:{to}\:{get}\:{an}\:{answer} \\ $$
Commented by mr W last updated on 27/Oct/23
$${i}\:{agree}\:{with}\:{you}.\:{no}\:{solution}! \\ $$