Category: Arithmetic

Question Number 92016 by peter frank last updated on 04/May/20 Answered by Rio Michael last updated on 04/May/20 $$\left(\mathrm{ii}\right){\mathrm{C}}_4{\mathrm{H}}_9\mathrm{Br}+\mathrm{NaOH}\to {\mathrm{C}}_4{\mathrm{H}}_9\mathrm{OH}+\mathrm{NaBr}$$$$\left(\mathrm{iii}\right)\:{CH}_{\mathrm{3}}…

Question Number 91912 by jagoll last updated on 03/May/20 $$\mathrm{if}\mid \mathrm{x}\mid ,\mid \mathrm{x}-1\mid ,\mid \mathrm{x}+1\mid \mathrm{are}\mathrm{first}$$$$\mathrm{three}\mathrm{terms}\mathrm{of}\mathrm{an}\mathrm{AP}.\mathrm{then}$$$$\mathrm{what}\mathrm{is}\mathrm{the}\mathrm{sum}\mathrm{of}{\mathrm{it}}^{\prime }\mathrm{s}\mathrm{first}$$$$10\mathrm{terms}\mathrm{equal}\mathrm{to}$$ Commented by jagoll last updated on 03/May/20…

Question Number 157074 by amin96 last updated on 19/Oct/21 $$\sqrt{4+\sqrt{4^2+\sqrt{4^3+\sqrt{4^4+\dots }}}}=?$$ Answered by MJS_new last updated on 19/Oct/21 $$3$$…

Question Number 25954 by abdo imad last updated on 16/Dec/17 $$nswerto25929bybinomeformula$$$${(1+x)}^{n+m}=\sum _{k=0}^{k=n+m}{C}_{n+m}^k{x}^{k}thecoefficentof{x}^{n}is$$$${C}_{{n}+{m}} ^{{n}} \:{and}\:{the}\:{coefficient}\:{of}\:{x}^{{m}} \:\:{is}\:\:\:{C}_{{n}+{m}}…

Question Number 25738 by yesaditya22@gmail.com last updated on 13/Dec/17 Answered by mrW1 last updated on 13/Dec/17 $$\frac{a+b}{\sqrt{ab}}=6$$$$\frac{\frac{a}{b}+1}{\sqrt{\frac{a}{b}}}=6$$$$let{t}^2=\frac{a}{b}⩾0$$$$\frac{{t}^{\mathrm{2}} +\mathrm{1}}{{t}}=\mathrm{6}…