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n-n-20-n-

Question Number 187215 by Humble last updated on 14/Feb/23 $$\frac{\sqrt{{n}!}}{{n}}=\sqrt{\mathrm{20}}\:;\:{n}=? \\ $$ Answered by ajfour last updated on 14/Feb/23 $$\frac{{n}!}{{n}^{\mathrm{2}} }=\mathrm{20} \\ $$$$\left({n}−\mathrm{1}\right)!=\mathrm{20}\left({n}−\mathrm{1}\right)+\mathrm{20} \\ $$$$\left({n}−\mathrm{2}\right)!=\mathrm{20}+\frac{\mathrm{20}}{{n}−\mathrm{1}}…

Question-187190

Question Number 187190 by 073 last updated on 14/Feb/23 Answered by aba last updated on 14/Feb/23 $$\mathrm{x}\Delta\mathrm{e}=\mathrm{x}\Rightarrow−\mathrm{3x}×\mathrm{e}−\mathrm{3x}−\mathrm{3e}−\mathrm{4}=\mathrm{x} \\ $$$$\Rightarrow−\mathrm{3e}\left(\mathrm{x}+\mathrm{1}\right)=\mathrm{4}\left(\mathrm{x}+\mathrm{1}\right)\Rightarrow\:\mathrm{e}=−\frac{\mathrm{4}}{\mathrm{3}} \\ $$ Commented by 073 last…

1-27-z-9-z-9-1-3-4-solve-for-z-

Question Number 56104 by problem solverd last updated on 10/Mar/19 $$\left(\frac{\mathrm{1}}{\mathrm{27}}\right)^{\mathrm{z}} +\mathrm{9}^{\mathrm{z}} .\mathrm{9}=\frac{\mathrm{1}}{\mathrm{3}^{−\mathrm{4}} } \\ $$$$\mathrm{solve}\:\mathrm{for}\:\mathrm{z} \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 10/Mar/19…

Prove-that-If-a-set-consist-of-n-number-of-terms-then-its-Power-Set-would-contain-2-n-number-of-terms-Use-formulas-of-sequence-and-series-

Question Number 56075 by Kunal12588 last updated on 10/Mar/19 $${Prove}\:{that}\:{If}\:{a}\:{set}\:{consist}\:{of}\:{n}\:{number}\:{of} \\ $$$${terms}\:{then}\:{its}\:{Power}\:{Set}\:{would}\:{contain} \\ $$$$\mathrm{2}^{{n}} \:{number}\:{of}\:{terms}. \\ $$$$\left[{Use}\:{formulas}\:{of}\:{sequence}\:{and}\:{series}\right] \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on…

Question-121612

Question Number 121612 by Khalmohmmad last updated on 10/Nov/20 Commented by MJS_new last updated on 10/Nov/20 $$\mathrm{the}\:\mathrm{problem}\:\mathrm{why}\:\mathrm{you}\:\mathrm{got}\:\mathrm{no}\:\mathrm{answer}\:\mathrm{might} \\ $$$$\mathrm{be}\:\mathrm{that}\:\mathrm{nobody}\:\mathrm{knows}\:\mathrm{what}\:“\mathrm{the}\:\left({a}_{\mathrm{4}} =?\right)'' \\ $$$$\mathrm{means}.\:\mathrm{your}\:\mathrm{question}\:\mathrm{is}\:\mathrm{like}\:\mathrm{this}\:\mathrm{one}: \\ $$$${the}\:{ship}\:{is}\:\mathrm{25}{m}\:{long}.\:{how}\:{old}\:{is}\:{Peter}? \\…