Category: Permutation and Combination

Question Number 97045 by john santu last updated on 06/Jun/20 $$\mathrm{a}\mathrm{committee}\mathrm{consisting}\mathrm{of}$$$$5\mathrm{men}\mathrm{\&}4\mathrm{women}\mathrm{is}\mathrm{to}\mathrm{be}$$$$\mathrm{chosen}\mathrm{from}8\mathrm{men}\mathrm{\&}4\mathrm{women}.$$$$\mathrm{If}\mathrm{one}\mathrm{man}\mathrm{\&}\mathrm{one}\mathrm{woman}\mathrm{are}\mathrm{husband}$$$$\mathrm{\&}\mathrm{wife},\mathrm{how}\mathrm{many}\mathrm{ways}\mathrm{can}$$$$\mathrm{the}\mathrm{committee}\mathrm{be}\mathrm{chosen}\mathrm{if}$$$$\mathrm{only}\mathrm{one}\mathrm{of}\mathrm{the}\mathrm{husband}\mathrm{\&}\mathrm{wife}$$$$\mathrm{must}\:\mathrm{be}\:\mathrm{chosen}\:?…

Question Number 96276 by mr W last updated on 31/May/20 Commented by mr W last updated on 31/May/20 $$\mathrm{Repost}\mathrm{of}\mathrm{an}\mathrm{unanswered}\mathrm{question}$$$$\left(Q88876\right)$$ Commented by…

Question Number 95888 by i jagooll last updated on 28/May/20 $${(1-2\mathrm{x})}^5{(2+\mathrm{x})}^6=\mathrm{a}+\mathrm{bx}+{\mathrm{cx}}^2+{\mathrm{dx}}^3+\dots$$$$\mathrm{find}:\mathrm{a},\mathrm{b},\mathrm{c}\mathrm{and}\mathrm{d}$$ Answered by john santu last updated…

Question Number 95578 by i jagooll last updated on 26/May/20 Commented by i jagooll last updated on 26/May/20 anyone can help? Commented by john santu last updated…

Question Number 95436 by 675480065 last updated on 25/May/20 $$\int \frac{{\mathrm{x}}^4\mathrm{dx}}{{\mathrm{x}}^8+{\mathrm{x}}^4+1}$$ Answered by Mr.D.N. last updated on 25/May/20 $$\:\:\:\:\mathrm{I}=\:\int\:\frac{\mathrm{x}^{\mathrm{4}} \mathrm{dx}}{\mathrm{x}^{\mathrm{8}} +\mathrm{x}^{\mathrm{4}}…