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Category: Permutation and Combination

Question-101393

Question Number 101393 by bemath last updated on 02/Jul/20 Answered by 1549442205 last updated on 02/Jul/20 Supposethenumberofcarsmanufacturedinthefirstyeatbenunits.Theninthesecondyearis3n2andinthethirdyearis2n.Sumofcarsmanufacturedinthe3_yearsperiodis$$\frac{\mathrm{9}\boldsymbol{\mathrm{n}}}{\mathrm{2}\:}.\boldsymbol{\mathrm{Hence}}\:\boldsymbol{\mathrm{P}}=\frac{\frac{\mathrm{3}\boldsymbol{\mathrm{n}}}{\mathrm{2}}}{\frac{\mathrm{9}\boldsymbol{\mathrm{n}}}{\mathrm{2}}}=\frac{\mathrm{1}}{\mathrm{3}}\Rightarrow\boldsymbol{\mathrm{Choose}}\:\boldsymbol{\mathrm{A}}…

A-woman-sent-8-letters-to-her-friends-The-letters-are-kept-in-the-addressed-envelopes-at-random-The-probability-that-4-friends-receive-correct-letters-and-4-letters-go-to-wrong-destination-is-

Question Number 100971 by john santu last updated on 29/Jun/20 Awomansent8letterstoherfriends.Thelettersarekeptintheaddressedenvelopesatrandom.Theprobabilitythat4friendsreceivecorrectlettersand4lettersgotowrongdestination,is___ Answered by…

Question-35347

Question Number 35347 by chakraborty ankit last updated on 18/May/18 Answered by Rasheed.Sindhi last updated on 18/May/18 You can't use 'macro parameter character #' in math mode$$\mathrm{Let}\:\mathrm{P}_{\mathrm{1}} ,\mathrm{P}_{\mathrm{2}} ,\mathrm{P}_{\mathrm{3}} ,\mathrm{P}_{\mathrm{4}} ,\mathrm{P}_{\mathrm{5}} \:\&\:\mathrm{P}_{\mathrm{6}}…