Category: Arithmetic

Question Number 110815 by I want to learn more last updated on 30/Aug/20 Answered by mr W last updated on 30/Aug/20 $$\left({x}+{y}\right)^{\mathrm{3}} ={x}^{\mathrm{3}} +{y}^{\mathrm{3}} +\mathrm{3}{xy}\left({x}+{y}\right)…

Question Number 176054 by BaliramKumar last updated on 11/Sep/22 $$\frac{1}{2!}+\frac{2}{3!}+\frac{3}{4!}+\frac{4}{5!}+\dots \dots \dots \dots .\mathrm{\infty }=?$$ Answered by Ar Brandon last updated on 11/Sep/22 $${S}=\underset{{n}=\mathrm{2}} {\overset{\infty} {\sum}}\frac{{n}−\mathrm{1}}{{n}!}=\underset{{n}=\mathrm{2}} {\overset{\infty} {\sum}}\frac{\mathrm{1}}{\left({n}−\mathrm{1}\right)!}−\underset{{n}=\mathrm{2}}…

Question Number 44906 by byaw last updated on 06/Oct/18 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 44858 by Tawa1 last updated on 05/Oct/18 $$\mathrm{Find}\mathrm{the}\mathrm{formular}\mathrm{for}\mathrm{the}\mathrm{first}\mathrm{kth}\mathrm{power}\mathrm{of}\mathrm{natural}\mathrm{numbers}$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 175766 by BaliramKumar last updated on 06/Sep/22 $$Numberofevencompositefactorsof2520?$$ Commented by mr W last updated on 06/Sep/22 $$2520=2^3\times 3^2\times 5\times 7$$$${for}\:{even}\:{factors}\:\mathrm{2}\:{must}\:{be}\:{contained}…