Category: Set Theory

Question Number 180299 by mnjuly1970 last updated on 10/Nov/22 Answered by som(math1967) last updated on 10/Nov/22 Commented by som(math1967) last updated on 10/Nov/22 $${let}\:{O}\:{is}\:{centre}\:{of}\:{semicircle} \…

Question Number 179918 by mnjuly1970 last updated on 04/Nov/22 Answered by mindispower last updated on 05/Nov/22 $$\zeta (t+=-\gamma -\mathrm{\Sigma }\zeta (n+1){(-t)}^n$$$${\mathrm{\Psi }}^{\prime }(z+1)=-\mathrm{\Sigma }\frac{n\zeta (n+1){(-1)}^n{t}^{\mathit{n}-1}}{1}$$$${z}\Psi''\left({z}+\mathrm{1}\right)=−\Sigma{n}\left(−\mathrm{1}\right)^{{n}} {t}^{{n}}…

Question Number 114236 by Aina Samuel Temidayo last updated on 18/Sep/20 $$70\mathrm{\%}\mathrm{of}\mathrm{the}\mathrm{employees}\mathrm{in}\mathrm{a}$$$$\mathrm{multinational}\mathrm{corporation}\mathrm{have}\mathrm{VCD}$$$$\mathrm{players},75\mathrm{\%}\mathrm{have}\mathrm{microwave}\mathrm{ovens},$$$$80\mathrm{\%}\mathrm{have}\mathrm{ACs}\mathrm{and}85\mathrm{\%}\mathrm{have}\mathrm{washing}$$$$\mathrm{machines}.\mathrm{At}\mathrm{least}\mathrm{what}\mathrm{percentage}\mathrm{of}$$$$\mathrm{employees}\mathrm{has}\mathrm{all}\mathrm{four}\mathrm{gadgets}?$$ Answered…

Question Number 114061 by Aina Samuel Temidayo last updated on 17/Sep/20 Answered by bobhans last updated on 17/Sep/20 $$A\cap B=\varnothing$$ Terms of Service Privacy…

Question Number 45840 by Rauny last updated on 17/Oct/18 $$a\leqq 7\Rightarrow \mathrm{P}(!\mathrm{\exists }{x}_a)=0,$$$$b\leqq 9\Rightarrow \mathrm{Q}(!\mathrm{\exists }{y}_b)=0\mathrm{for}a,b\in \mathbb{N}$$$$\mathrm{And}A⊋A^{\prime }:A=\{(x,y)\mid \mathrm{P}\left(x\right)\cdot \mathrm{Q}\left(y\right)=0\}=A^{\prime },$$$$B_{\in A}=\{(x,y)\in A\mid x=y\}$$$$\mathrm{Then}\mathrm{\forall }t\in \mathbb{N}:\mid B\mid =n\left(t\right)=f(\mathrm{P}\left(x\right),\mathrm{Q}\left(y\right)),$$$$\mathrm{also}\mathrm{only}t\mathrm{can}\mathrm{be}\mathrm{in}[N,M].$$$$\mathrm{find}\:{M}.…