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n-2-10-10-1-3-5-7-19-n-help-me-




Question Number 125504 by Study last updated on 11/Dec/20
n!=2^(10) ∙10!(1∙3∙5∙7∙∙∙19)        n=???  help me
$${n}!=\mathrm{2}^{\mathrm{10}} \centerdot\mathrm{10}!\left(\mathrm{1}\centerdot\mathrm{3}\centerdot\mathrm{5}\centerdot\mathrm{7}\centerdot\centerdot\centerdot\mathrm{19}\right)\:\:\:\:\:\:\:\:{n}=??? \\ $$$${help}\:{me} \\ $$
Answered by Dwaipayan Shikari last updated on 11/Dec/20
1.3.5...k=((1.2.3.4.5...2n)/(2^k .k!))=(((2k)!)/(2^k k!))  k=10    n!=2^(10) .10!.(((2k)!)/(2^k .k!))⇒n!=(20)!=n=20
$$\mathrm{1}.\mathrm{3}.\mathrm{5}…{k}=\frac{\mathrm{1}.\mathrm{2}.\mathrm{3}.\mathrm{4}.\mathrm{5}…\mathrm{2}{n}}{\mathrm{2}^{{k}} .{k}!}=\frac{\left(\mathrm{2}{k}\right)!}{\mathrm{2}^{{k}} {k}!} \\ $$$${k}=\mathrm{10}\:\: \\ $$$${n}!=\mathrm{2}^{\mathrm{10}} .\mathrm{10}!.\frac{\left(\mathrm{2}{k}\right)!}{\mathrm{2}^{{k}} .{k}!}\Rightarrow{n}!=\left(\mathrm{20}\right)!={n}=\mathrm{20} \\ $$
Commented by ajfour last updated on 11/Dec/20
does everyone see an ad alongwith  this post, after the new update?  i do not approve positively for this.
$${does}\:{everyone}\:{see}\:{an}\:{ad}\:{alongwith} \\ $$$${this}\:{post},\:{after}\:{the}\:{new}\:{update}? \\ $$$${i}\:{do}\:{not}\:{approve}\:{positively}\:{for}\:{this}. \\ $$
Commented by Dwaipayan Shikari last updated on 11/Dec/20
But I haven′t seen any kind of Ad sir!
$${But}\:{I}\:{haven}'{t}\:{seen}\:{any}\:{kind}\:{of}\:{Ad}\:{sir}! \\ $$
Commented by ajfour last updated on 11/Dec/20
thanks, but after the latest  update whereupon i agreed to the  request of startapp i see Ads  alongwith few posts.
$${thanks},\:{but}\:{after}\:{the}\:{latest} \\ $$$${update}\:{whereupon}\:{i}\:{agreed}\:{to}\:{the} \\ $$$${request}\:{of}\:{startapp}\:{i}\:{see}\:{Ads} \\ $$$${alongwith}\:{few}\:{posts}. \\ $$
Commented by Tinku Tara last updated on 12/Dec/20
Ads and StarrApp SDK is removed  from the app.
$$\mathrm{Ads}\:\mathrm{and}\:\mathrm{StarrApp}\:\mathrm{SDK}\:\mathrm{is}\:\mathrm{removed} \\ $$$$\mathrm{from}\:\mathrm{the}\:\mathrm{app}. \\ $$
Commented by mr W last updated on 12/Dec/20
at first i have deleted the latest  version and installed an old version  again.
$${at}\:{first}\:{i}\:{have}\:{deleted}\:{the}\:{latest} \\ $$$${version}\:{and}\:{installed}\:{an}\:{old}\:{version} \\ $$$${again}. \\ $$
Commented by mr W last updated on 12/Dec/20
that′t true! after the update, Ads are  inbedded in some posts. once you  see them, you can not switch them  off by yourself.  here an example:
$${that}'{t}\:{true}!\:{after}\:{the}\:{update},\:{Ads}\:{are} \\ $$$${inbedded}\:{in}\:{some}\:{posts}.\:{once}\:{you} \\ $$$${see}\:{them},\:{you}\:{can}\:{not}\:{switch}\:{them} \\ $$$${off}\:{by}\:{yourself}. \\ $$$${here}\:{an}\:{example}: \\ $$
Commented by mr W last updated on 12/Dec/20
Commented by MJS_new last updated on 12/Dec/20
I'm willing to pay for good apps. I'd suggest a cheap monthly or yearly rate for students and a life time subscription.
Commented by mr W last updated on 12/Dec/20
thanks sirs!  to be honest, i have full understanding  when you add Ad′s in this app. i only  don′t agree that i have no possibility  to switch them off. certainly i can′t  accept that a third party collects my  personal data.
$${thanks}\:{sirs}! \\ $$$${to}\:{be}\:{honest},\:{i}\:{have}\:{full}\:{understanding} \\ $$$${when}\:{you}\:{add}\:{Ad}'{s}\:{in}\:{this}\:{app}.\:{i}\:{only} \\ $$$${don}'{t}\:{agree}\:{that}\:{i}\:{have}\:{no}\:{possibility} \\ $$$${to}\:{switch}\:{them}\:{off}.\:{certainly}\:{i}\:{can}'{t} \\ $$$${accept}\:{that}\:{a}\:{third}\:{party}\:{collects}\:{my} \\ $$$${personal}\:{data}. \\ $$
Commented by mr W last updated on 12/Dec/20
thanks for explanation sir!
$${thanks}\:{for}\:{explanation}\:{sir}! \\ $$
Commented by Tinku Tara last updated on 12/Dec/20
This app does not ask or collected  any personal data. Since all ad suppliers  are connected, the personal data that  allowed in other apps are available  to sdk to personlize ads. You can  decline than  ads without use  of you data is shown.
$$\mathrm{This}\:\mathrm{app}\:\mathrm{does}\:\mathrm{not}\:\mathrm{ask}\:\mathrm{or}\:\mathrm{collected} \\ $$$$\mathrm{any}\:\mathrm{personal}\:\mathrm{data}.\:\mathrm{Since}\:\mathrm{all}\:\mathrm{ad}\:\mathrm{suppliers} \\ $$$$\mathrm{are}\:\mathrm{connected},\:\mathrm{the}\:\mathrm{personal}\:\mathrm{data}\:\mathrm{that} \\ $$$$\mathrm{allowed}\:\mathrm{in}\:\mathrm{other}\:\mathrm{apps}\:\mathrm{are}\:\mathrm{available} \\ $$$$\mathrm{to}\:\mathrm{sdk}\:\mathrm{to}\:\mathrm{personlize}\:\mathrm{ads}.\:\mathrm{You}\:\mathrm{can} \\ $$$$\mathrm{decline}\:\mathrm{than}\:\:\mathrm{ads}\:\mathrm{without}\:\mathrm{use} \\ $$$$\mathrm{of}\:\mathrm{you}\:\mathrm{data}\:\mathrm{is}\:\mathrm{shown}.\: \\ $$

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