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Question Number 73828 by ajfour last updated on 16/Nov/19 Commented by ajfour last updated on 17/Nov/19 $${If}\:{on}\:{each}\:{face}\:{of}\:{the}\:{larger}\:{cube} \\ $$$${there}\:{is}\:\left({at}\:{least}\right)\:{one}\:{corner}\:{of}\: \\ $$$${the}\:{inner}\:{cube},\:{then} \\ $$$${find}\:{minimum}\:{value}\:{of}\:{ratio}\:{r}. \\ $$$$\:{r}=\frac{{s}}{{a}}\:=\:\frac{{edge}\:{length}\:{of}\:{inner}\:{cube}}{{edge}\:{length}\:{of}\:{outer}\:{cube}}\:.…
Question Number 73816 by TawaTawa last updated on 16/Nov/19 Commented by mr W last updated on 16/Nov/19 $$\frac{{a}+{b}}{\mathrm{2}}−{b}={b} \\ $$$$\Rightarrow{a}=\mathrm{3}{b} \\ $$$$\Rightarrow\frac{{a}}{{b}}=\mathrm{3} \\ $$ Commented…
Question Number 73800 by TawaTawa last updated on 15/Nov/19 $$\mathrm{Please}\:\mathrm{draw}\:\mathrm{the}\:\mathrm{shape}\:\mathrm{and}\:\mathrm{find}\:\mathrm{the}\:\mathrm{angles} \\ $$$$\mathrm{QR}\:\:\:=\:\:\mathrm{6}\:\:\mathrm{cm} \\ $$$$\mathrm{RS}\:\:\:=\:\:\mathrm{7}\:\mathrm{cm} \\ $$$$\mathrm{PS}\:\:=\:\:\mathrm{4}\:\mathrm{cm} \\ $$ Commented by mr W last updated on…
Question Number 139328 by Bekzod Jumayev last updated on 25/Apr/21 Commented by Bekzod Jumayev last updated on 25/Apr/21 $$\boldsymbol{{Help}}\:\boldsymbol{{please}}? \\ $$$$ \\ $$ Answered by…
Question Number 73737 by ajfour last updated on 15/Nov/19 Commented by ajfour last updated on 15/Nov/19 $${Find}\:{R}/{r}\:. \\ $$ Answered by ajfour last updated on…
Question Number 139254 by mathdanisur last updated on 25/Apr/21 $${Given}\:{a}\:{convex}\:{hexagon}\:{ABCDEG} \\ $$$${satisfy}:\:{AB}={BC},\:{CD}={DE},\:{EF}={FA}. \\ $$$${Suppose}\:\bigtriangleup{ACE}\:{is}\:{a}\:{right}\:{triangle}. \\ $$$$\left(\frac{{BC}}{{BE}}+\frac{{DE}}{{DA}}+\frac{{FA}}{{FC}}\right)_{\boldsymbol{{min}}} =? \\ $$ Answered by mr W last updated…
Question Number 8175 by prakash jain last updated on 02/Oct/16 $$\mathrm{Prove} \\ $$$$\frac{\mathrm{4}^{{n}} }{{n}}<\:^{\mathrm{2}{n}} {C}_{{n}} \:\mathrm{for}\:\mathrm{all}\:{n}\geqslant\mathrm{4}\:\mathrm{and}\:{n}\in\mathbb{Z}^{+} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 8168 by aungnaingsoe last updated on 02/Oct/16 $${Find}\:{the}\:{coefficient}\:{of}\:{in}\:{the}\:{expansion}\:{of} \\ $$$$\left(\mathrm{1}+{x}\right)\left(\mathrm{1}+{x}^{\mathrm{2}} \right)\left(\mathrm{1}+{x}^{\mathrm{3}} \right)…\left(\mathrm{1}+{x}^{{n}} \right). \\ $$ Commented by Rasheed Soomro last updated on 02/Oct/16…
Question Number 73673 by ajfour last updated on 14/Nov/19 Commented by ajfour last updated on 14/Nov/19 $${Q}\:\mathrm{73503}\:\:\:\left({another}\:{way}\:\:{a}\:{try}..\right) \\ $$ Commented by ajfour last updated on…