Question Number 226289 by Mingma last updated on 25/Nov/25 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 226044 by Jubr last updated on 18/Nov/25 Answered by mr W last updated on 19/Nov/25 $$\mathrm{1}{C}_{\mathrm{50}} ^{\mathrm{1000}} +\mathrm{2}{C}_{\mathrm{49}} ^{\mathrm{999}} +\mathrm{3}{C}_{\mathrm{48}} ^{\mathrm{998}} +…+\mathrm{51}{C}_{\mathrm{0}} ^{\mathrm{950}}…
Question Number 224709 by solihin last updated on 28/Sep/25 Answered by mr W last updated on 30/Sep/25 $${number}\:{of}\:{possibilities}\:{that}\:{n} \\ $$$${people}\:{have}\:{different}\:{birthdays}: \\ $$$$\mathrm{365}×\mathrm{364}×…×\left(\mathrm{365}−{n}+\mathrm{1}\right) \\ $$$${total}\:{number}\:{of}\:{possibilities}: \\…
Question Number 224634 by gregori last updated on 23/Sep/25 $$\:\:\underbrace{\mathcal{X}} \\ $$ Answered by mr W last updated on 24/Sep/25 $$\_{B\_B\_B\_B\_B\_B\_G\_G\_G\_G\_} \\ $$$$\_{G\_G\_G\_G\_B\_B\_B\_B\_B\_B\_} \\ $$$${B}\ast{B}\ast{B}\ast{B}\ast{B}\ast{B}…
Question Number 224641 by Mingma last updated on 23/Sep/25 Answered by mr W last updated on 07/Oct/25 $$\left({a}\right) \\ $$$${p}=\frac{\mathrm{4}}{{C}_{\mathrm{5}} ^{\mathrm{52}} }=\frac{\mathrm{1}}{\mathrm{649}\:\mathrm{740}} \\ $$$$\left({b}\right) \\…
Question Number 224623 by gregori last updated on 22/Sep/25 $$\:\:\: \\ $$ Commented by gregori last updated on 23/Sep/25 $${no}\:{sir}.\:{i}\:{don}'{t}\:{get}\:{answer}\: \\ $$ Commented by mr…
Question Number 224398 by Mingma last updated on 08/Sep/25 Commented by mr W last updated on 08/Sep/25 $${are}\:\mathrm{10}−\mathrm{5}−\mathrm{8},\:\mathrm{10}−\mathrm{8}−\mathrm{5},\:\mathrm{5}−\mathrm{10}−\mathrm{8} \\ $$$${different}\:{combinations}? \\ $$ Commented by Mingma…
Question Number 224261 by Tawa11 last updated on 30/Aug/25 If I have 10 people and I want to create pairings, so that every person is…
Question Number 222192 by mr W last updated on 22/Jun/25 $${there}\:{are}\:\mathrm{32}\:{students}\:{in}\:{a}\:{class}.\:{for} \\ $$$${each}\:{competition}\:{in}\:{a}\:{sport}\:{event}\: \\ $$$${in}\:{the}\:{school}\:{each}\:{class}\:{can}\:{send} \\ $$$${a}\:{team}\:{with}\:{three}\:{students}.\:{if}\:{no} \\ $$$${two}\:{students}\:{may}\:{be}\:{in}\:{the}\:{same} \\ $$$${team}\:{for}\:{more}\:{than}\:{one}\:{time},\:{in} \\ $$$${how}\:{many}\:{different}\:{competitions}\: \\ $$$${can}\:{this}\:{class}\:{participate}?…
Question Number 222105 by alcohol last updated on 17/Jun/25 Commented by alcohol last updated on 17/Jun/25 $${please}\:{help}\:{with}\:\left({iii}\right)\:{a}\:{and}\:{b}\: \\ $$ Answered by mr W last updated…