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Category: Geometry

Question-Graph-How-many-four-member-dominating-sets-are-there-in-the-graph-of-C-7-

Question Number 189777 by mnjuly1970 last updated on 21/Mar/23 $$ \\ $$$$\:\:\:\mathrm{Question}\:\:\left(\mathrm{Graph}\:\right)… \\ $$$$ \\ $$$$\:\:\:\:\mathrm{How}\:\mathrm{many}\:\mathrm{four}\:\mathrm{member}\:\mathrm{dominating}\:\mathrm{sets} \\ $$$$\:\:\:\: \\ $$$$\:\:\:\:\:\:\mathrm{are}\:\:\mathrm{there}\:\:\mathrm{in}\:\mathrm{the}\:\:\mathrm{graph}\:\mathrm{of}\:\:\mathrm{C}_{\:\mathrm{7}} \:? \\ $$$$ \\ $$$$\:\:\:\:\:\:\:\:\:\:−−−−−−…

Question-58696

Question Number 58696 by ajfour last updated on 27/Apr/19 Commented by ajfour last updated on 27/Apr/19 $$\angle\mathrm{AOB}=\mathrm{90}°\:\mathrm{and}\:\mathrm{ABCD}\:\mathrm{is}\:\mathrm{a}\:\mathrm{square}. \\ $$$$\mathrm{If}\:\mathrm{DGF}\:\bot\:\mathrm{OB},\:\mathrm{find}\:\theta. \\ $$ Commented by ajfour last…

x-1-2-x-2-3-x-3-4-x-1998-1999-x-1999-2000-1-x-

Question Number 189761 by normans last updated on 21/Mar/23 $$ \\ $$$$\:\:\frac{\boldsymbol{{x}}}{\mathrm{1}×\mathrm{2}}\:+\:\frac{\boldsymbol{{x}}}{\mathrm{2}×\mathrm{3}}\:+\:\frac{\boldsymbol{{x}}}{\mathrm{3}×\mathrm{4}}\:+\:……+\:\frac{\boldsymbol{{x}}}{\mathrm{1998}×\mathrm{1999}}\:+\:\frac{\boldsymbol{{x}}}{\mathrm{1999}×\mathrm{2000}}\:=\:\mathrm{1}\:\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\boldsymbol{{x}}\:=\:???? \\ $$$$ \\ $$ Answered by Frix last updated on 21/Mar/23…