Question Number 160090 by abdullah_ff last updated on 24/Nov/21
$$\mathrm{There}\:\mathrm{are}\:\mathrm{40}\:\mathrm{oranges},\:\mathrm{20}\:\mathrm{apples},\:\mathrm{and}\: \\ $$$$\mathrm{20}\:\mathrm{lemons}\:\mathrm{in}\:\mathrm{a}\:\mathrm{bag}.\:\mathrm{What}\:\mathrm{is}\:\mathrm{the}\: \\ $$$$\mathrm{minimum}\:\mathrm{number}\:\mathrm{of}\:\mathrm{fruits}\:\mathrm{that}\:\mathrm{you}\: \\ $$$$\mathrm{have}\:\mathrm{to}\:\mathrm{take}\:\mathrm{out}\:\mathrm{of}\:\mathrm{the}\:\mathrm{bag}\:\mathrm{with}\:\mathrm{your}\: \\ $$$$\mathrm{eyes}\:\mathrm{closed}\:\mathrm{before}\:\mathrm{you}\:\mathrm{are}\:\mathrm{sure}\:\mathrm{that}\: \\ $$$$\mathrm{one}\:\mathrm{of}\:\mathrm{them}\:\mathrm{is}\:\mathrm{an}\:\mathrm{orange}? \\ $$
Commented by mr W last updated on 24/Nov/21
$${if}\:{you}\:{only}\:{take}\:\mathrm{40}\:{fruits}\:{out}\:{of}\:{the} \\ $$$${bag},\:{they}\:{can}\:{be}\:\mathrm{20}\:{apples}\:{and}\:\mathrm{20} \\ $$$${lemons},\:{no}\:{orange}.\:{but}\:{if}\:{you}\:{take} \\ $$$${one}\:{more},\:{i}.{e}.\:{totally}\:\mathrm{41}\:{fruits},\:{then} \\ $$$${at}\:{least}\:{one}\:{of}\:{them}\:{is}\:{orange}.\:{so} \\ $$$${you}\:{should}\:{take}\:{at}\:{least}\:\mathrm{41}\:{fruits}\:{to} \\ $$$${be}\:{sure}\:{that}\:{one}\:{of}\:{them}\:{is}\:{orange}. \\ $$
Commented by abdullah_ff last updated on 24/Nov/21
$$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir}.\: \\ $$$${sorry}\:{for}\:{this}\:{kind}\:{of}\:{post}.\:{this}\:{post} \\ $$$${was}\:{really}\:{for}\:{primary}\:{level}. \\ $$